GOP's Brown wins Mass. Senate seat in epic upset  —  Buzz up!  —  BOSTON - In an epic upset in liberal Massachusetts, Republican Scott Brown rode a wave of voter anger to defeat Democrat Martha Coakley in a U.S. Senate election Tuesday that left President Barack Obama's health care overhaul …

Bayh Warns “Catastrophe” If Dems Ignore Massachusetts Senate Race Lessons  —  ABC News' Jonathan Karl reports:  —  Even before the votes are counted, Senator Evan Bayh is warning fellow Democrats that ignoring the lessons of the Massachusetts Senate race will “lead to even further catastrophe” for their party.

Coakley adviser memo: D.C. Dems ‘failed’ Coakley  —  The Coakley campaign is bridling at finger-pointing from the White House and Washington Democrats, and an outside adviser to the campaign has provided to POLITICO a memo aimed at rebutting the charge that Coakley failed and making the case that national Democrats failed her.

Live coverage of the US Senate race  —  10:57 p.m. — Brown: “I know I have a lot to learn in the Senate, but I know who I am and I know who I serve.  I'm Scott Brown, I'm from Wrentham, and I drive a truck.  And let me just say in conclusion... I am nobody's senator but yours.”

ALERT!  COAKLEY VOTERS REPORT RECEIVING BALLOTS PRE-MARKED FOR BROWN  —  Contact: Alex Zaroulis (617) 549-0358  —  Campaign Manager Kevin Conroy:

The fallout: Dems rethink health bill  —  Republican Scott Brown's upset win in Massachusetts Tuesday threatened to derail any hopes of passing a health reform bill this year, as the White House and Democratic leaders faced growing resistance from rank-and-file members to pressing ahead with a bill following the Bay State backlash.

Lieberman: Brown win would send message about healthcare  —  A victory for Republican Senate candidate Scott Brown in Massachusetts would send a message that voters are “really skeptical about this healthcare bill,” Sen. Joe Lieberman (I-Conn.) said Tuesday.

Health Care Comes To Screeching Halt - Sen. Webb: No HCR Votes Until Brown Seated  —  Less than 15 minutes after the race was called for Republican Scott Brown, the first of what could be many conservative Democrats asks for leadership to put the brakes on health care reform.

Democratic Party responds to Coakley memo: ‘Political malpractice’  —  A senior Democratic Party official responded furiously today to a memo from a Coakley adviser arguing that the national party bears a large share of blame for failing to support her financially and sticking her with unpopular policies on health care and Afghanistan.

Pollster Frank Luntz having difficulty finding Coakley supporters for focus group on election night of Massachusetts senate race  —  Just about every election night, Republican pollster Frank Luntz assembles a focus group of likely voters to help predict election results.

Top Senate Democrat Outlines ‘Nuclear Option’ Strategy for Health Care  —  A top Senate Democrat for the first time Tuesday acknowledged that the party is prepared to deal with health care reform by using a controversial legislative tactic known as the “nuclear option” if Republican Scott Brown wins the Massachusetts Senate election.

Blogging the Massachusetts Senate Race  —  Residents cast their votes at the polls Tuesday morning at the town hall in Leicester, Mass.  —  Whither the Republican leadership?  3:46 p.m. Much of the analysis about the race quickly gets back to finger-pointing among three Democratic establishments …

Weird Ballot In Cambridge?  —  Note to readers: Please let me know what you're seeing in the field today in Massachusetts.  —  A software engineer in Cambridge says he was handed a fishy ballot at the polling station in a local firehouse — it already had the bubble next to Scott Brown's name filled in.