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Why do national polling analysts think Minnesota is a swing state?

REUTERS/John Gress
Democratic presidential candidates have a good record in Minnesota, but that might be changing.

Have you bookmarked RealClearPolitics’ electoral college map? Do you check it every day to see whether Hillary Clinton or Donald Trump has gained ground in the polls?

If you answered yes, and you’re a Minnesotan, you might be a bit puzzled. You might ask yourself why Minnesota, which has voted Democratic in presidential elections since 1976, shows up not red, not blue, but gray — a toss-up state — in an election year where the Republican contender is believed to be especially unpopular here.

It’s not just RealClearPolitics. There are several election forecasters that have had Minnesota listed as less than true blue this election. On Nate Silver’s FiveThirtyEight, Minnesota is a state to watch, though as of publication Thursday morning, it gave Clinton an 88 percent chance of taking Minnesota (slightly less than Wisconsin, Michigan and Pennsylvania). On the Washington Post’s The Fix, Minnesota is leaning, but not safely, blue. The Louis Jacobson/Governing magazine map changed Minnesota’s rating from likely Democratic to lean Democratic on October 5, calling Clinton’s margins “relatively narrow.”

Of course, this could all change, and fast, in light of the leak of Trump’s lewd comments on Friday and however voters process the presidential debate, the full effects of which likely haven’t shown up in the polls yet.

Each of these forecast and poll aggregating sites has its own methodology, but few seem to regard Minnesota — the state that currently has the longest-running Democratic presidential voting streak — as “safe Democratic” in this race, like some analysts believe Washington, Oregon, New York and California are.

Why is that?

Limited data

RealClearPolitics shows an electoral map that has 260 electoral votes in camp Clinton (candidates need 270 to win). The site has 165 electoral votes in Trump’s camp and 113 in the toss-up column, including Minnesota’s 10 electoral college votes.

RCP calculates its bellwether RCP average by averaging polls. For Minnesota, it’s currently only averaging three September polls of likely voters. The first, by Gravis/Breitbart, has Clinton and Trump tied. KSTP’s poll had Clinton up by 7, while the Star Tribune’s had Clinton up by 6.

That’s not a whole lot of data to go off of, compared to the number of polls in other states. If you add those numbers up and divide them by three, you get the polling average, which gives Clinton a 4.3 percentage point advantage over Trump in the state.

RealClearPolitics managing editor Emily Goodin said the site considers information about how the electoral map is constructed — including why some states are toss-ups and why some polls are included but not others — proprietary. But states where either candidate has an average poll margin of victory under 5 or less are toss-ups, and states where the candidates have larger margins are generally in the red or blue camps.

Whether that Clinton +4.3 number will move will be a function of whether newer polls show the Minnesota electorate swaying one way or the other, and if they do, whether RealClearPolitics includes them in their average.

This year, Minnesota has seen relatively few polls — and David Byler, an elections analyst at RealClearPolitics, said he wouldn’t necessarily count on pollsters spending a ton of time here.

“So far, we haven't had a lot of polls out of Minnesota, and the fact that the race is currently not close nationally means that it might be less interesting to poll than some other states that might now become close,” he said, noting that he’s not involved in RealClearPolitics’ electoral map.

‘Might be a swing state’

FiveThirtyEight has had a lot of success predicting elections based on statistical modeling. The website, run by statistician Nate Silver, collects polls, weights them based on past accuracy and the rigor of their polling methodology, and in one model, adds into consideration demographic information, like past voting and economic conditions.

On Oct. 28 in 2012 — about a week and a half before the election —  FiveThirtyEight predicted Obama would win by 6.8 percentage points in Minnesota, “a state that we have given little attention this year.” That’s still weeks from now in election time (we're about three and a half weeks out and polls usually tighten as the election gets closer), but was a little less than Clinton was expected to beat Trump by as of Thursday. But Romney spent more time here, had less baggage and was thought to be better-liked (as was Obama compared to Clinton) among voters compared to Trump.

Obama ultimately won by a 7.7 percentage point margin — smaller than his 10-plus point margin of victory in Minnesota in 2008.

This year, FiveThirtyEight calls Minnesota a state to watch. As of Thursday morning, FiveThirtyEight predicts Clinton will win with a 8 percentage point margin — a number that has gone up in recent days — in Minnesota and gives her an 88 percent chance of taking the state.

There are a few reasons Minnesota might be seen as a swing state, wrote FiveThirtyEight writer and analyst Harry Enten in an email. “First, in most recent elections it's been fairly close to the national vote. In 2012, Obama won by 8 as he won by 4 nationally. That's not like in a blue state like Massachusetts where Obama won by over 20 percentage points. On that basis alone, we'd expect the state to be fairly close if the election were close.”

Getting (relatively) less blue

These polls may reflect an underlying change in Minnesota’s electorate: according to one trusted measure of a state’s partisan leanings, Minnesota has become less blue in presidential elections, relative to all U.S. states, over time.

That measure is the Partisan Voting Index (PVI) by the Cook Political Report, a nonpartisan organization that analyzes U.S. elections. This year, Minnesota’s PVI is D+2, which means it’s thought to be 2 percentage points more Democratic than the rest of the U.S. is, on average. In 1994, Minnesota was D+6, but dropped to D+4 in 1998 and D+3 in 2002. In 2006, it dropped to D+2, where it has remained ever since.

Minnesota's Partisan Voter Index
Minnesota has become a less blue-leaning state relative to the rest of the U.S. in recent years, according to the Cook Political Report's Partisan Voter Index, a measure of how Republican or Democratic-leaning a state is. In 1996, it was considered D+6. Today, it's D+2.
Source: Cook Political Report

“It’s been turning redder, even though Republicans haven’t been winning in the state,” Byler said. “I think of it a little bit similarly to North Carolina, because North Carolina is, according to the Cook Political Voting Index, R+3. When you have a big enough Democratic margin, (they) can peel it off.” (Obama won North Carolina in 2008, but lost it in 2012.)

Remember, too, that despite its track record on presidential elections, Minnesota isn’t all blue. The Minnesota governor’s office and the state House and Senate have switched party control in recent years. Minnesota’s congressional delegation is split, though weighted toward Democrats — there are five Democrats and three Republicans in the House and two Democrats in the Senate.

If this were a different year, we might expect to see the Republican and Democratic presidential candidates running closer to neck-and-neck. If a strong Republican candidate ran for president, Byler thinks they’d have a shot of breaking Democrats’ winning streak in Minnesota.


That candidate is probably not Trump: while it makes sense that Minnesota, as a less racially diverse state, would be a target for a Republican candidate (Minnesota is 85 percent white, and white people have become more solidly Republican in recent years, according to Gallup), Trump has struggled to make inroads with white, college-educated voters, of which there are many in Minnesota, Byler said.

How votes are changing based on college degrees and race — both predictors of how people will vote — is something FiveThirtyEight has been looking into.

map of counties in MN that would favor trump under 538's analysis
Under FiveThirtyEight’s vote-swap scenario, Trump could make gains in several Minnesota counties, though it wouldn't likely be enough to flip the state into the red column.

On Wednesday, it released a county-by-county analysis of what the U.S. electorate would look like if if one-fifth of the minorities and college-educated whites who voted for Romney and one-fifth of the non-college educated whites who voted for Obama in 2012 switched parties this year. The simulation reflects the fact that Trump has attracted the support of non-college educated whites, while non-whites and college-educated whites are favoring Clinton.

If that happened, several Minnesota counties would flip from blue to red, diminishing Clinton’s margin of victory in Minnesota.

“Trump's strength is with white voters without a college degree,” Enten wrote. “That's where he's doing better than Romney. There are a lot of those in Minnesota (especially up in the Iron Range). Therefore, there's at least a decent shot he'll pull closer to his national numbers in Minnesota. That would result in a close race in Minnesota if the election nationally is close.”

Any changes in the way Minnesotans are voting probably aren’t enough to flip the electoral votes because she’s up by so many points, at least for now. The two most recent polls conducted in Minnesota — one by Google Consumer Surveys and another by CVOTER International — which were conducted through Sunday, show Clinton leading by more than those same polls conducted previously.

Clinton has consistently been leading in the polls in Minnesota, said Michael Cohen, adjunct professor and chief data scientist for the PEORIA Project at George Washington University’s  Graduate School of Political Management.

“That’s something I look at as a pollster — is it going up and down?” he said.

Despite the changes to the partisan leanings of Minnesota’s electorate, for it to become a true battleground state this year, “something extraordinary is going to have to happen on the Clinton side,” Cohen said, pointing to a possibility of something that could sway the electorate coming out of WikiLeaks, which has been releasing a steady stream of hacked Clinton emails, or a comment like Romney’s 47 percent one in 2012 that would “reinforce everyone’s view of her in a very negative way.”

This year, pollsters say Clinton is likely to be the eleventh consecutive Democratic presidential contender to win in Minnesota. But if Minnesota voters continue to get less liberal compared to the rest of the U.S., it may not be a sure win for Democratic presidential candidates in the future.

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Comments (19)

  1. Submitted by Robert Moffitt on 10/13/2016 - 10:22 am.

    I don’t think national analysts know Minnesota

    While it is true the Range is not as reliably DFL as it once was, I see no reason to believe any major statewide shift are happening.

    While I respect RCP’s more conservative take on polls, I don’t see any indication on the ground that our state will be anything other than blue on Nov. 8.

    • Submitted by RB Holbrook on 10/13/2016 - 02:09 pm.

      Balancing the Range

      The Range is not as reliably DFL as it once was, but that is balanced somewhat by the metro suburban areas not being as reliably Republican as they once were.

  2. Submitted by Edward Blaise on 10/13/2016 - 10:30 am.

    A helpful gage…

    From travelling about the state for business and pleasure, talking to folks, seeing lawn signs, reading, watching, listening to local news it is helpful to look at the polls and think: “so this is what a Clinton 70% chance feels like”. There never has been a Trump groundswell here and it has always seemed a foregone decision for Clinton. And then I look at Colorado, Virginia, Michigan and others near that same polling number and think: if folks in those states are essentially of the same disposition as us, Trump was out of it a long time ago.

  3. Submitted by Connie Sullivan on 10/13/2016 - 12:04 pm.

    The issue for Minnesota is not that there are a lot of people likethat ignorant white woman Senator McCain had to correct wh en she passed on a lie about Obama at a 2008 town hall here.

    It’s that there are lots of farther-to-left Democrats, this year called the Bernie people, who will foolishly vote for a third party candidate out of spite and ignorance of the possible horrible effect of that vote: a victory for Trump in Minnesota.

    It’s that kind of Who Cares? attitude–shared by most Trump people, incidentally–that worries those who are still solid blue in our state, and who regard the 2016 presidential campaign as the ugliest since the 19th century.

  4. Submitted by Hiram Foster on 10/13/2016 - 01:24 pm.


    I think it’s because in Minnesota Republicans tend to do a little bit better in polls than they do in elections. Early on, this means that Republicans are a little bit tempted by the possibility of a Minnesota upset, but then they give up as reality sets in closer to election when the tough allocation of resource decisions must be made.

  5. Submitted by Tim Milner on 10/13/2016 - 01:29 pm.

    Big drop in Millennial voters

    With multiple family members in the Millennial age group, I get the feel that many are simply going to sit this election out. Trump has no chance with the group and by and large they don’t connect with Hillary. So with no one of great interest at the top of the ticket, it seems they are not very motivated to vote. I can relate to their top of ticket concerns but always vote and have tried to convinced them that the should always vote too.

    I think that hurts the Democrats more than the Republicans. But we will see.

  6. Submitted by Jim Million on 10/13/2016 - 02:09 pm.

    Annus anomalia

    This is no year for standardized measures, certainly.

    “Minnesota has become less blue in presidential elections, relative to all U.S. states, over time.” So, those other states have become more blue more rapidly, leaving us relatively “less blue”? Pretty meaningless, for the most part, seems to me.

  7. Submitted by David Wintheiser on 10/13/2016 - 02:12 pm.

    The ‘Streak’ is more of a self-fulfulling prophesy

    The biggest factor in Minnesota having a Democratic ‘streak’ when voting for President is certainly that, in 1984, it was the only state in the U.S. to vote for Walter Mondale. That vote maintained Minnesota as the longest-running Democratic presidential state, and helped reinforce a story line of Minnesota as a ‘safe’ Democratic state where Republicans shouldn’t bother campaigning in years where the Democratic candidate wasn’t particularly strong.

    Though I agree this isn’t the year that streak will be broken (why would I imagine Trump winning the state versus Clinton when he came in third among other Republicans during the primary season?), it’s pretty clear that the self-fulfilling prophecy aspect of ‘the streak’ is slowly coming to an end.

  8. Submitted by Mike Downing on 10/13/2016 - 05:21 pm.

    Missing the point…

    70% of Americans believe we are heading in the wrong direction. Yet, Hillary Clinton is a continuation of that wrong dirction. While Donald Trump appears to be a horrible candidate, he does represent a change in direction that 70% of Americans want.

    • Submitted by Frank Phelan on 10/13/2016 - 09:12 pm.

      Drill, Baby Drill!

      Hold on there, pilgrim. We need to drill down to get to the truth. It may well be that 70% feel the country is on the wrong track, but that does not necessarily mean they all are looking for a more conservative direction. A lot of that 70% wants more and better Wall Street regulation, a higher minimum wage and help for families in need of day care.

      Conservatives like to play this game with Obamacare. A lot of people are dissatisfied with it, some because they want to get rid of it, and many because they want single payer.

      And I will not be voting for HRC.

  9. Submitted by Joel Stegner on 10/13/2016 - 07:48 pm.

    Might be a swing state?

    Perhaps in some future election, if Trump doesn’t totally discredit the Republican Party, but in this election? That doesn'( make sense, given that even before his true awfulness was reveal, Trump finished third in the Republican primary.

    • Submitted by Jim Million on 10/14/2016 - 12:32 pm.

      Appreciate your point

      It seems now that too many sources are promoting the “swing state” illusion, perhaps for lack of faith in their own traditional measures. I spent last week touring East Central Kentucky (another case in point), looking up old family roots. I saw no lawn signs for anyone (perhaps banned by statute?) and nearly no bumper stickers or other partisan displays. I simply saw no typically seasonal displays for either candidate. I returned to examine the similar local lack of political promotion in my own neighborhood (traditionally quite “blue”). Only one Connie Bernardi corner placard has appeared…certainly not a banner of contention around here.

      My simple conclusion: Most everyone prefers public anonymity this year. How pollsters and others attempting to quantify this 2016 mess can be at all reliable simply is beyond my somewhat cynical assessment. Without all the cable chatter and blog blather, one might observe very little tumult.

  10. Submitted by Andrew Kay on 10/13/2016 - 08:26 pm.

    Polling methodologies

    As a person with a long time interest in the mechanics of statistics, I have grown to appreciate the ongoing dialog found at

    The authors clearly explain their methodology here and have a daily commentary on shifts in polls at all levels of an election cycle. They often give insight as to why a certain pollster leans in one direction or another.

    Just today they drudged up details on LA Times/USC polls which demonstrate how demographic skews can happen and effect an overall poll.

  11. Submitted by Dennis Litfin on 10/13/2016 - 09:57 pm.

    What Mike…….!

    “70% of Americans want Trump’s change of direction” …… Now you sound like Trump himself…..blowing in the wind with no cred.

  12. Submitted by Hiram Foster on 10/14/2016 - 06:43 am.


    70% of Americans believe we are heading in the wrong direction.

    I am one of them. But I don’t blame Democrats or Hillary Clinton for that. Clearly, a country that takes Donald Trump seriously is one in decline. No one can reasonably claim that a nation that puts him so close to the presidency is headed in the right direction.

  13. Submitted by Connie Sullivan on 10/16/2016 - 01:30 pm.

    If too many Minnesotans either sit on their hands and don’t vote at all, or “vote their [leftish] consciences” by writing in someone or voting for the Green or some other evanescent tiny third, fourth, or fifth party, we could go for Trump as a state. Not purple. Red.

    Let’s remember than more than half of American males will be voting for Trump ( a polling result that blew my mind).

  14. Submitted by Jim Million on 10/18/2016 - 12:56 pm.

    Last Gasp of Partisan Desperation:

    When voting one’s conscience is viewed as some sort of civic betrayal. What a sad devolution of sensibilities we seem to have come to accept here.

  15. Submitted by K Meyers on 10/18/2016 - 12:57 pm.

    Minnesotans for Trump

    If you look at all state polls in this year’s election, some blue states are moving to red and some red states are moving to blue. I think it’s the result of undecideds or voting against the other candidate, since we have 2 weaker candidates than in previous years. I think the blue turning red voters are voting for change (Trump) and the red turning blue are not voting for Clinton but against Trump.

    I have seen more Trump signs driving around this great state than Clinton signs.

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