BOSTON - Scott Brown was a little-known Republican state senator who shocked Massachusetts Democrats three years ago by winning a U.S. Senate seat in a special election that became a national rallying cry for the nascent tea party movement.
Much has changed since then for Brown. In the Senate, he compiled a voting record more moderate than his one-time tea party allies would have liked. Just two months ago, voters said a resounding "no" to giving him a full term.
Now Brown is considering whether to seize a chance to return to the Senate - in yet another special election - to take the place of Democratic Sen. John Kerry if he is confirmed as secretary of state. Democrats will be more than ready for Brown this time if he does run.
In this Nov. 4, 2012, file photo, then-Sen. Scott Brown, R-Mass., waves to supporters from his bus after a campaign rally at Faneuil Hall in Boston. Three years ago, Brown was a little-known Republican state senator from Massachusetts who shocked Democrats by winning a U.S. Senate seat.
"The atmosphere would be completely different," said the state Democratic Party chairman, John Walsh. He acknowledged making "unforgivable mistakes" by taking for granted the race in which Brown won the late Sen. Edward M. Kennedy's seat.
"We are not asleep at the switch anymore," Walsh said.
As the Democratic machine begins to stir, national conservative groups active in Brown's first run say they've yet to focus on a Massachusetts Senate election that could be five months away.
"It's a different race," says Amy Kremer, national chairman of the Tea Party Express, which funneled a ton of volunteers and more than $340,000 into Brown's 2010 bid.
"Conservatives in Massachusetts, I'm sure, are excited and want him, but it's definitely not something that people are focused on across the country," Kremer said. "What happened with him in 2010 was it became a nationalized race and people got excited. But right now, it's not on anybody's radar."
Republicans familiar with Brown's thinking expect him to run but say that his candidacy is by no means assured. These Republicans spoke on the condition of anonymity because they were not authorized to disclose information about Brown's decision-making.
Republicans in Washington see Brown as a chance to take a seat from Democrats, who hold a 55-45 edge in the Senate.
The date of the special election won't be announced until Kerry resigns upon his confirmation as secretary of state. State officials expect the special election as early as June.
Despite the time frame, Brown is in no hurry to make his intentions public, according to his Republican allies. For now, his camp is content to let speculation about his candidacy fuel steady news coverage. Since leaving office Jan. 3, Brown has conferred quietly with Republican operatives Eric Fehrnstrom and Peter Flaherty, senior aides to former GOP presidential candidate Mitt Romney.
Brown's allies say he is encouraged that a member of the Kennedy family will not run for the seat. Kennedy's widow, Vicki Kennedy, and Edward Kennedy Jr. have said they would not enter the contest.
Kerry and Democrats in Washington are backing longtime U.S. Rep. Ed Markey, the only announced candidate, although Markey's popularity outside his north-central Massachusetts district is unclear. First elected in 1976, he is already drawing criticism from Massachusetts' small Republican class.
"Ed Markey is an uninspiring, unaccomplished political hack," said Massachusetts-based Republican strategist Ryan Williams, a former Romney aide.
If Brown declines to run, there are other possible Republican candidates in the wings, including former Gov. William Weld, former gubernatorial candidate Charles Baker and recent congressional candidate Richard Tisei.