Bloomberg also distinguished himself during the last days of the campaign by accusing then front-runner Bill de Blasio of running a racist campaign, presumably because he showed his family in a campaign ad.
After then-front-runner Herman Cain was damaged by allegations of past sexual harassment, Gingrich gained support, and quickly became a contender in the race, especially after Cain suspended his campaign.
So far, no front runner has emerged.
City councilman Julian Castro, then the front-runner, sent his twin brother to ride on a float in his stead.
Mrs. Clinton, then the front-runner in the Democratic primary, had far more extensive relationships with local officials and ethnic leaders across the country, and David Plouffe, Mr. Obama's campaign manager, did not have the time or chatty temperament to create them.
And if Rick Santorum continues to battle Mr Romney in states not sold on his conservatism, then the front-runner may not cross the finish line at all.That may convince Mr Santorum, Ron Paul and Newt Gingrich, who finished second, third and fourth in Illinois, to keep fighting.
Her absence came after a highly embarrassing email was leaked in which she urged Gove to demand a senior job from the then leadership front-runner Boris Johnson and suggested that her boss, Mail editor-in-chief Paul Dacre, as well as Rupert Murdoch, would back Gove in any contest.
Yankee Paco was in the middle of the field of 3-year-old trotters at the halfway point, but took control when Legendary Lover K, then the front-runner, faded on the rail in the stretch and Dreamaster, the favorite, was still locked.
I hope President Bush helps you reach your climate goals," Podesta said, referring to then Republican front-runner Jeb Bush.
Those lines are consistent with Trump's running stump speech on American demise, but then the front-runner took a curious turn.
