Authors: Joshua Cohan

Richard Ellis/Getty Images(WASHINGTON) -- Newt Gingrich will officially suspend his presidential campaign on Tuesday, ABC News confirms. The former House speaker will make the announcement from Washington D.C., where he will be in town for the White House Correspondents Association dinner this weekend.
It is "highly likely" Gingrich will endorse Mitt Romney during Tuesday's announcement, a source close to the campaign said.
After big losses in each of the five states that held their GOP primaries Tuesday night, Gingrich said Wednesday morning that he thinks Romney is "ultimately going to be the nominee."
"I do think it's pretty clear that Gov. Romney is ultimately going to be the nominee," Gingrich said during a campaign stop at Georgio's restaurant in Cramerton, N.C.  "And we're going to do everything we can make sure that he is in fact effective, and that we as a team are effective both in winning this fall and then, frankly, in governing."
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