Brad Haynes reports on congressional races.

Rep. Michelle Bachmann's call for an investigation of anti-American views among her colleagues helped fuel a fund-raising bonanza for her opponent and is now throwing her re-election into question.

In a Friday interview on MSNBC, the Minnesota congresswoman said Sen. Barack Obama's associations with the Rev. Jeremiah Wright and Bill Ayers "absolutely" raised questions about the Democratic presidential nominee's patriotism. "I'm very concerned that he may have anti-American views," she said. Asked about how many of her other fellow members of Congress potentially harbored anti-American sentiments, she said House Speaker Nancy Pelosi and Senate Leader Harry Reid "have far-leftist views," but would not say whether they were "pro-America or anti-America."

"I wish the American media would take a great look at the views of the people in Congress and find out are they pro-America or anti-America," she continued. "I think people would love to see an exposé like that."

Former Secretary of State Colin Powell, who endorsed Obama on Sunday, specifically cited Rep. Bachmann's comments as evidence of the divisive campaigning that was pushing him away from the Republican Party in this election. "We have got to stop this kind of nonsense," Powell said during a Sunday interview after he had endorsed Obama.

Elwyn Tinklenberg, Bachmann's Democratic opponent for the congressional seat from suburban St. Paul, raised more than $650,000 –-twice his cash on hand at the end of September-–over the weekend. Nearly $150,000 of the total came through groups on the liberal fund-raising site that decry the congresswoman's "new McCarthyism." Sensing her vulnerability, House Democrats today pledged $1 million for television advertising against her.

The negative exposure and sudden erosion of Bachmann's cash lead–a more than $1 million advantage at the beginning of the month–led the Cook Political Report to downgrade her prospects; it now rates the race a toss-up. "In seven minutes on Friday's edition of MSNBC's Hardball, Bachmann did herself more harm than she ever could have done Sen. John McCain good in all her many appearances as his campaign surrogate," said Cook's House editor, David Wasserman.