Sen. Olympia Snowe (R-Maine) picked up a new challenger on Saturday when Jon Hinck, a Democratic state representative, entered the primary race to unseat her in 2012.

Hinck kicked off his announcement Saturday at a rally before a college football game in Orono, Maine.

"Over the past 33 years in Washington, Olympia Snowe has been losing touch with Maine, opting to support Wall Street windfalls over the working families in our state. She supports policies that have increased our national debt, weakened public education and shipped jobs out of Maine," says a message on Hinck's website. "We deserve a senator who will vigorously challenge the special interests and take on the issues vital to our state."

Matthew Dunlap, a former Maine secretary of state, is already in the Democratic primary. On the Republican side, Tea Party-affiliated candidate Andrew Ian Dodge has entered the race, as has businessman Scott D'Amboise.

None of the contenders are expected to pose a major threat to Snowe, one of the most popular senators in the country. A survey released Nov. 3 by Democratic firm Public Policy Polling put her approval rating at 57 percent and showed her beating both of the Democrats by more than 40 points.