Clinton's campaign manager braced supporters for the potential setback in a memo Wednesday that suggested the former secretary of state may lose the caucus states this weekend.

Mr Trump lashed back in the debate, calling Mr Romney "a failed candidate" who lost to President Barack Obama four years ago because he was such a poor candidate. Mr Trump, with 10 state victories, leads the field with 329 delegates. Overall, 155 delegates are at stake for the Republicans and none of the states are winner-take-all contests. On the Democratic side, Bernie Sanders is already outlining his plan to come back strong in upcoming primaries after Tuesday's heavy losses. Either needs 4,763 to win the party nomination.

Republican Marco Rubio, in a sign of retrenchment or at least strategic focus, canceled Louisiana and Kentucky events Friday, instead landing in Kansas to unload on Trump at a Topeka airport.

"Look at those hands, are they small hands?" the front-runner for the GOP presidential nomination said, raising them for viewers to see. Please. For humanity: No more debate dick jokes. But if his rivals remain in the race, the chances could increase. "The voters of the country decide who they want to support, and the delegates are elected to also make a determination of who would be in the best interest of the party and the country to be our nominee".

It was Trump's latest effort to try to turn Rubio, still considered a favorite of the reeling GOP establishment, into a punch line ahead of the March 15 Florida primary.

"He hinted my hands are small, something else must be small".

Late layup lifts Celtics over Knicks 105-104
And since the Knicks are no longer playing good basketball, they can't hide the bad story lines that inevitably surround the team. Last night's contest came down to the final possession, as the Knicks had the ball, down one, with 16 seconds left to play.

Republican political consultant Scott Jennings said he hasn't seen the "basic mechanics of what you would expect in a get-out-the-vote operation".

The hunt for delegates by the presidential candidates is resuming Saturday, as voters in five states are getting their say in the 2016 race.

"As are you", she said.

"I've wanted to be involved in the campaign as a referee, and if there were a few foul balls, I could keep them guided on the path to becoming the next president", Romney said, clearly unaware of which sports metaphor he was employing.

Cruz, too, took the fight to Trump, saying that while it's easy to print campaign slogans on baseball caps, as Trump does, the question is whether Trump understands what made America great in the first place.

Sanders, meanwhile, would appear to have an advantage in two caucus states, Nebraska and Kansas.