FOX News broke this story. It says Souder is resigning his seat to avoid a House Ethics Committee investigation. Fox News reports:
Eight-term Rep. Mark Souder will announce his resignation Tuesday after it came to light that he was conducting an affair with a female aide who worked in his district office, Fox News has learned.Gov. Daniels will be required to call for a special election to fill his unexpired term. This will likely set off a mad scramble within both parties to fill this seat and his spot on the Republican ticket this November. Stay tuned. I'm expecting Marlin Stutzman, who ran a strong race in the U.S. Senate primary, and who has strong name recognition and popularity in northeastern Indiana to enter the race shortly. This is one affair that I don't care to learn the details about. Geesh, this must have been one desparate person.
Multiple senior House sources indicated that the extent of the affair with the 45-year-old staffer would have landed Souder before the House Ethics Committee.
Elected as a family values conservative as part of the Republican revolution in 1994, Souder survived a tough re-election challenge in 2008 and survived a contested primary two weeks ago.
Souder was absent from Washington most of last week, missing multiple votes and only voting on Thursday. While the rumors had been flying, Souder claimed that he was at home tending to his ill wife.
All the way through his election, Souder tried to knock down the affair story, calling it revenge politics at play. But the backroom chatter in Indiana and among the GOP on Capitol Hill became too much to survive. Indiana Gov. Mitch Daniels was informed as late as Monday night that Souder would give up his post.
Souder's resignation would make him the second lawmaker to step down in less than two months. In March, former Rep. Eric Massa, D-N.Y., resigned amid allegations that he sexually harassed male staffers. Massa's case is now before the House Ethics Committee.
UPDATE: It looks like automobile dealer Bob Thomas may be planning to enter the race. He just put out a statement saying he would release a statement on Souder's resignation on Thursday and be available for interviews on Monday. He lost to Souder in the primary. One negative campaign mailer put out by the Souder campaign badly damaged Thomas' chances when it disclosed a palatial mansion where Thomas actually lives in Carmel outside the Third District; he only rents a modest apartment in Ft. Wayne where he claims his residency for voting purposes.
It looks like the female part-time staffer is also a Christian radio broadcaster in Ft. Wayne. That's how Souder first met her during regular appearances on her talk show.