Gov. Patrick sticks his beak into the US Senate race.

Rudy Giuliani and Scott Brown arrived in the North End, and the crowd parted.

“Go, Scott, go!’’ they shouted. “Rudy! Rudy!’’

This pair of Republican stars - Giuliani, the former mayor of New York, and Brown, the suddenly ascendant GOP Senate hopeful - soaked up every last bit of the adulation.

“I’m used to being here with winning candidates,’’ Giuliani said, citing his visits to Boston for Republican governors such as Mitt Romney and William Weld. “I like campaigning here because, frankly, they feed me.’’

Giuliani is hoping to christen another victor this time, his presence yesterday underscoring the sudden national interest in Tuesday’s special US Senate election between Brown and Democrat Martha Coakley, the state’s attor ney general.

Several hours later, Coakley was surrounded by heavyweights from her party, with state and national Democrats seeking to rouse voters with red-meat attack lines portraying Brown as out of touch with Massachusetts and the future.

“You just have to decide whether you want us to be a tomorrow country or a yesterday country,’’ former president Bill Clinton told a packed banquet hall at the Fairmont Copley in downtown Boston, an event Coakley aides said drew 1,500 people. “You just have to decide if you want to pick the person who gets to shut America down.’’

Clinton, who is helping lead American relief efforts for Haiti, which has been ravaged by an earthquake, cast his dueling responsibilities yesterday as “two sides of the same coin’’ because they both illustrate the need for good governance.

Coakley, referencing a Brown TV ad showing him campaigning around the state in his GMC truck, drew a roar when she said, “Just because you’re driving around in a truck doesn’t mean you’re going in the right direction.’’

Coakley’s campaign rally, coming as polls indicate a tight race, drew an assortment of Democratic operatives, elected officials, and fans of the former president. The free event was held in the glitzy Grand Ballroom.

Senator John F. Kerry launched into an impassioned attack on Brown, calling him “silent Scott’’ for not raising his voice during President Bush’s administration, describing the 30-year National Guard member as “AWOL’’ when Bush proposed privatizing Social Security.

“For eight years, he was George Bush’s yes man, and now he wants to go to Washington and become [Senate Republican leader] Mitch McConnell’s no man,’’ Kerry said. “We’re not going to let it happen.’’

Democrats spoke in dire terms about the prospect of losing a Senate seat to a Massachusetts Republican for the first time since 1972, in a bid to galvanize the state’s Democratic Party establishment ahead of Tuesday’s vote.

“The voting here is going to determine the balance of power in America,’’ Kerry said

“We have a fight on our hands,’’ said Governor Deval Patrick. “We’re fighting . . . the same folks who made the mess we’re in.’’

Wrong, Governor. Scott Brown is fighting the folks who made the mess we're in. And by God, he's gonna win that fight this Tuesday.

UPDATE: More from the Boston Herald and Globe.

SECOND UPDATE: More from Politico.com, the Globe and the Herald.