By Dan Balz and Chris Cillizza
updated 1:33 a.m. MT, Wed., May 19, 2010

Pennsylvania Sen. Arlen Specter (D), a Senate fixture who switched parties a year ago, lost his bid for reelection Tuesday, while in Kentucky, ophthalmologist Rand Paul rode the anti-Washington energy of the "tea party" movement to an easy victory.

On a busy primary election night that put the political establishments of both parties on the defensive, Specter fell to two-term Rep. Joe Sestak. Elected five times to the Senate as a Republican, Specter had the support of President Obama and the political leadership of his state, but he ran into rank-and-file resistance inside his new party and became the third member of Congress to lose his own party's support in the past two weeks.

In the Republican Senate primary in Kentucky, Paul, a political novice and a son of Rep. Ron Paul (R-Tex.), stormed past Secretary of State Trey Grayson, who had the support of Senate Minority Leader Mitch McConnell (Ky.) and much of the Bluegrass State's political establishment. With almost all of the vote counted, Paul had 59 percent, a sign of the power of his and the tea party's small-government message within the GOP.
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Although poles apart ideologically, Sestak and Paul both struck anti-Washington themes in their victory statements Tuesday night.

"This is what democracy looks like," Sestak said to a crowd of cheering supporters. "A win for the people, over the establishment, over the status quo, even over Washington, D.C."

"I have a message, a message from the tea party, a message that is loud and clear and does not mince words," Paul said at his victory rally. "We've come to take our government back."

Elsewhere, Democrats held the seat of the late congressman John P. Murtha (D) in a special House election with clear implications for the November midterms. Republicans had hoped to pick off the culturally conservative district to demonstrate their momentum this year. But Democrat Mark Critz, a former aide to Murtha, defeated Republican businessman Tim Burns with relative ease.

In Arkansas, Democratic Sen. Blanche Lincoln, another embattled incumbent who had Obama's support, fell short in her bid to win renomination outright and now faces Lt. Gov. Bill Halter in a potentially perilous June 8 runoff.

Barometer of voter anger
Tuesday's results were the most powerful indicator to date of the voter anger and dissatisfaction that has shaped the political climate all year.

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