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"Delaware does matter and we're looking very forward to seeing the results tonight," Gingrich said on Sean Hannity's radio show. But the former Speaker said "there are a lot of folks that are reassessing the messaging process" after every election night.

Still, Gingrich seemed less definitive about his previous pledge to continue as a candidate until the convention in Tampa.

"We're going to be in Tampa whether its as an active candidate or as a leader in the party," Gingrich said. "I've said all along, the morning [Romney] gets to 1,144 delegates then he's the nominee, but he's not there yet."

Hammond told Yahoo there were three conceivable scenarios for election results, with even the worst - "doomsday" - not necessarily resulting in a Gingrich exit from the race.

"We do poorly in Delaware, Gingrich will keep his campaign schedule in North Carolina but reassess with supporters whether or not there is a path forward," Hammond says.

The campaign has events scheduled in the Tar Heel state throughout the week.

Hammond added that a close finish or victory in Delaware could expose serious flaws in a Romney candidacy.

"A win in Delaware builds financial and grassroots momentum going into North Carolina -- combined with the ABC news report that Winning our Future has $5 million to spend on TV in North Carolina could be the beginning of a chain of wins through DE, NC, KY, WV," Hammond said. "Then into a battle royal in Texas and California."