"I don't know too many candidates who haven't seized on Scott Brown," said Jennifer Duffy, a political analyst in Washington who watches Senate races. "If I hear one more time that someone is the next Scott Brown, I'm going to lose my mind. These things are not easily replicated."

In Florida, Gov. Charlie Crist, a moderate running for U.S. Senate, was quick to telephone Brown after his win. Crist's GOP rival, Marco Rubio, a conservative, had asked his supporters to send money to Brown.

Rep. Mark Kirk, R-Ill., is running against a field of challengers to secure the GOP nomination for Senate in his home state, which has voted overwhelmingly Democratic in recent years. He spoke to Brown on Thursday, when the newest senator visited Washington for the first time.

"If it can happen in Massachusetts, it can happen in Illinois," Kirk said in an interview. Kirk said that he and Brown were alike, both social moderates who were fiscally conservative and strong on national security.

In California, all three Republicans vying to take on Democratic Sen. Barbara Boxer have pointed to Brown's win.

Former Rep. Tom Campbell, who entered the race earlier this month, likened himself to Brown in a statement, saying that Campbell "was the only candidate for Senate with a proven record of fighting federal spending."

Meanwhile, the campaign of Carly Fiorina, another GOP Senate candidate, said that, like Brown, Fiorina isn't a Washington insider.

"Carly is the only political outsider running," said Julie Soderland, a Fiorina spokeswoman. "We believe that is the distinguishing factor." The campaign of a third GOP candidate in the California race, Chuck DeVore, said it did the most to support Brown, directing its supporters to make calls for Brown prior to Election Day.

In an interview, Devore said that "there is a direct line that can be drawn" between his campaign and Brown.

His spokesman, Joshua Trevino, said that Brown "will be for some time the most in-demand Republican on the planet. Every office-seeker from a dog catcher in Ohio to a Senate candidate in California will want him to come out."

But he said that DeVore had not asked Brown to come to California in order to boost his campaign, which lags behind both Campbell and Fiorina.

In Connecticut, Republican Senate candidates Linda McMahon and Rob Simmons have been comparing themselves to Brown. McMahon says she, like Brown, is an outsider. Simmons says that, like Brown, he is a deficit hawk who is strong on national defense.

As one Republican campaign aide said, "Everyone is the new Scott Brown."

Even Sen. John McCain, R-Ariz., the 2008 Republican presidential candidate, has had Brown tape a message of support.

McCain, who has been in the Senate for 30 years, is trying to ward off a primary challenge from the right.

Brown's victory convinced Sen. John Cornyn, R-Texas, who heads the GOP Senate election effort, to take another shot at recruiting high-profile Republicans to take on established Democrats.

He has approached Rep. Mike Pence, R-Ind., about challenging Democratic Sen. Evan Bayh.

And there is speculation that Sen. Harry Reid, D-Nev., the Senate majority leader, could face a new Republican challenger, Lt.Gov. Brian Krolicki, in the wake of Brown's win. Krolicki's entry could worsen Reid's already fading chances for re-election.

Brian Walsh, a spokesman for the National Republican Senate Committee, said he expected Brown's win to help the GOP in tight races against Democrats in Colorado, New Hampshire and Ohio.