A top conservative group is set to start advertising in a tight special election for a vacant House seat in upstate New York.
American Crossroads says Tuesday it spent $350,000 to run ads for a week in the Rochester and Buffalo TV markets and had reserved air time for an additional week. The special election is May 24.
The race in the heavily Republican district initially was expected to be a shoo-in for Republican Jane Corwin. But polls show her in a tight contest with Democrat Kathy Hochul (HOH'-kuhl) and Tea Party candidate Jack Davis.
Republican Chris Lee resigned in February after shirtless photos he sent to a woman he met on Craigslist were published online.
Crossroads spent millions to defeat Democrats in 2010, much of it from undisclosed donors.