Rep. Justin Amash (R-Mich.) sounded less than thrilled about running for the Senate — and about his party's chances at an open Senate seat in Michigan during a weekend speech in his home state.

"I'm still looking at it, but you're certainly have to make a decision by about the fall. Otherwise it becomes a very difficult battle and it's already a difficult battle, no matter what," Amash said at a Republican picnic in Berrien County, Michigan when asked about a possible Senate run. "This is a Democratic state, still, and for a Republican to win a Senate race you have to have a very good year for Republicans, so…"

The race became a GOP pickup opportunity when longtime Sen. Carl Levin (D-Mich.) decided to retire, but in recent months has looked more and more secure for Democrats.

The libertarian-leaning congressman, whose push to defund the National Security Agency's phone records program has raised his national profile, has yet to rule out a Senate bid.

Former Michigan Secretary of State Terri Lynn Land (R) is the current GOP front-runner, though others are still taking a look at a run. Rep. Gary Peters (D-Mich.) is the consensus choice for Democrats, and has gotten off to a quick fundraising start.

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