The Democratic Senatorial Campaign Committee has been hoping all election cycle that Republicans would nominate extremist candidates too far to the right for the general elections, aided by the charged-up conservative base and the demands of Tea Party and 9/12 activists.

In Colorado, the DSCC is painting Republican nominee Ken Buck as just that. The DSCC released this TV ad today, highlighting Buck for saying he supports a repeal of the 17th Amendment, which provides for direct election of U.S. senators.

Buck, for his part, says he doesn't support repealing the 17th Amendment. Buck told the Huffington Post that a 17th Amendment repeal "doesn't make sense" and that he rethought his position the day after he told the Pikes Peak Economic Club that he did, in fact, want to repeal it.

Here's the ad:



UPDATE: Response from National Republican Senatorial Committee spokeswoman Amber Marchand:

"It's clear that the Democrats are rightfully concerned about their chances in Colorado after their costly and contentious primary drove appointed Senator Michael Bennet to the far-left of his party and his constituents. Ironically, what Bennet's campaign handlers in Washington continue to fail to recognize is that Colorado voters believe Bennet's reckless spending agenda, massive government health care bill, and record $13 trillion debt is what's truly 'extreme,' and that's why he continues to trail Ken Buck in recent surveys."