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GOP candidates last night backed off their pledge to support the party’s eventual nominee, raising questions of a possible contested convention.

In anticipation of that event, Marco Rubio is attempting to hold on to his delegates, Carl Cameron reported.

It is likely the Florida senator is hoping for an opportunity of a bigger role there, he said.

By law, any candidate who drops out should technically lose their delegates, which would then go up for grabs to whoever is leading.

But “it’s not uncommon for candidates actually to try to hold on to their delegates up until the convention,” Cameron explained.

“Back in 2000, Mike Huckabee didn’t give up his delegates until a week before the convention. Rubio’s making a much more hardcore play here.”

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