A super PAC associated with Emily's List, a well-known group supporting largely Democratic women candidates, has bought nearly $500,000 in TV ad time to oppose Rep. Todd Akin, Federal Election Commission records show.

Women Vote! spent $494,217 for TV time Thursday, according to a filing with the FEC. It appears to be the largest single third-party expenditure in the race to date.

And it may drain the PAC's bank account. Open Secrets says Women Vote! had $737,565 on hand at the end of August.

The filing comes as a PAC associated with Sen. Jim DeMint has apparently pledged $290,000 for Akin and against Sen. Claire McCaskill.

It also comes a few hours after Akin's statement that opponent McCaskill was not "ladylike" in their first debate.