Redefining the term "Populist"

The Times, they are a-changin', I guess.

WASHINGTON, Sept. 12 - Senator Lincoln Chafee of Rhode Island won the Republican primary there on Tuesday, fending off a bid from a populist challenger that the national Republican Party had feared would cost it a seat it had held since 1976 in an overwhelmingly Democratic state. The race was the most closely watched contest in the nine primaries across the country on Tuesday, in a year when Democrats are hoping to capitalize on anti-incumbent sentiment to take control of one or both houses of Congress.

Am I crazy, but didn't "Populist" use to infer a very different type of politician than the Club for Growth candidate?