Independence Party gubernatorial candidate Rob Hahn is set to unveil a Vikings stadium plan today that would include a $200 million state contribution backed by gambling revenue of some kind: riverboat gambling, so-called “e-tabs” (electronic pulltabs) or, perhaps, a racino.

In news conferences scheduled for the Metrodome and  State Office Building this morning, Hahn, who is challenging IP-endorsed candidate Tom Horner, will propose several options:

• Building a new Vikings stadium on the Dome site for $700 million to $900 million.

• Expanding the University of Minnesota’s TCF Bank Stadium to 80,000 seats.

• Or creating a multi-purpose facility for football and entertainment surrounded by retail and maybe a casino, most likely out of downtown Minneapolis

Among Hahn’s funding options: renegotiating the state’s gambling compact with American Indian tribes that operate casinos statewide.

Backers of Twins ballpark proposals found in the past that gaming-funding ideas often created solid opposition from the left and the right.

But Hahn said he wasn’t worried about special interest groups because “frankly, I have none of them supporting me.”

With the Vikings beginning training camp in Mankato this week, Hahn said, it seemed a good time to raise the stadium issue.

“Let’s get rolling on some discussion,” he said in an interview. “Let’s have some leadership up front ... As a voter, I get tired of ‘Let’s wait ‘til the last minute.’ ”

The Vikings have not been seeking an 80,000-seat stadium, but one with about 65,000 seats and more than 100 suites; TCF Bank Stadium has about 51,000 seats now and fewer than 40 suites. Expanding the stadium to meet the Vikings’ programmatic needs would be costly. Although that cost is unknown, Hahn said he thought that a $200 million state contribution would cover it.

He also would want some revenues coming back to state coffers if the team were sold to new owners.

Hahn said he will campaign in Mankato Thursday to continue to raise the stadium issue.