Even if Wisconsin Gov. Scott Walker triumphs over Tom Barrett, a strong possibility based on the final polls, Wisconsin Democrats aren’t going to go down quietly. Politico reported this morning that state Democrats are already plotting to contest a Walker victory by demanding a recount, and now Barrett supporters appear to be laying the groundwork to blame their potential loss on Republican “dirty tricks.”

Salon reports on the unconfirmed assertions that Walker allies are trying to suppress Democratic voter turnout:

With both sides counting on dramatic turnout, Tom Barrett’s campaign is charging Scott Walker supporters with dirty tricks. In an e-mail sent to supporters last night, Barrett for Wisconsin Finance Director Mary Urbina-McCarthy wrote, “Reports coming into our call center have confirmed that Walker’s allies just launched a massive wave of voter suppression calls to recall petition signers.” According to Urbina-McCarthy, the message of the calls was: “If you signed the recall petition, your job is done and you don’t need to vote on Tuesday.”

Last night I talked to a Wisconsin voter who says she received just such a robo-call. Carol Gibbons told me she picked up the phone and heard a male voice saying “thank you for taking this call,” and that “if you signed the recall petition, you did not have to vote because that would be your vote.” …

Gibbons is a retired public employee and a staunch Walker opponent.

Not only are Democrats seizing on this to raise questions about election integrity, they’re also using it for last-minute fundraising, as Ann Althouse points out.

And they are also petitioning the state Government Accountability Board to investigate the allegations:

Meanwhile, State Sen. Lena Taylor, D-Milwaukee, sent a letter to Government Accountability Board Director Kevin Kennedy asking for an investigation into that alleged call and another that claimed the election was Wednesday.

“It is imperative that your agency uphold the law and criminally prosecute any person that is engaged in voter suppression and disenfranchisement tactics that violate the spirit and plain language of the laws of Wisconsin,” Taylor wrote.

So far, there’s nothing to substantiate the claims, outside of Salon’s account from a Barrett supporter. In fact, news reports and statements from the state Government Accountability Board indicate that voter turnout has been remarkably high today.