From the top of my Time.com story about last night:
This is how it goes in 2010 at the ballot box: old orders are upended, political lions become roadkill, chosen successors get left behind and the outsider, riding a wave of discontent, becomes the new front-runner.
In quick succession Tuesday night, the jittery inhabitants of Washington’s marble halls found three more reasons to worry about their staying power. Pennsylvania Senator Arlen Specter, the Senate’s patron saint of resilience, was turned out in a Democratic primary in favor of an unwanted rival, Representative Joe Sestak, who had neither major union support nor White House support. In Arkansas, Senator Blanche Lincoln, a model of southern Democratic moderation, was forced into a primary runoff by a self-styled outsider, Bill Halter, challenging from her left. And in Kentucky, the Washington establishment’s chosen Republican Senate candidate, Trey Grayson, fell to the son of a libertarian outlier who carried the flag of another party. “I have a message, a message from the Tea Party, a message that is loud and clear and does not mince words: We’ve come to take our government back,” declared Rand Paul, son of Representative and former presidential candidate Ron Paul, upon winning by a double-digit margin.