Senator Wayne Allard (R-Colorado) put forward an amendment to repeal the Federal Minimum Wage completely, which would have reverted some states back to their individual minimum wages set at $2.65 per hour. And these are the Senators that voted with him on it:
Some are no surprise at all. But anyone running for president this year should be smart enough to not alienate the entire working class, as McCain (A likely candidate) and Brownback (Already announced as a candidate) did with this vote.
I'll link to Bob Geiger, who got the story up before I did and did a hell of a job here and here.