Democratic National Committeeman Pete Gertonson announced he will support Sanders after the Vermont senator's huge win in Idaho, Politico reported.

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“Pent-up frustrations of a red state, exploded Idaho Caucuses to historic numbers last Tuesday night, with 78 % for Bernie Sanders,” Gertonson wrote.

“I’m proud to be an Idaho Democrat representing the people’s choice. I’ll cast our Super Delegate vote for Bernie Sanders!”

Sanders scored a huge win in Idaho's caucuses on Tuesday, receiving 78 percent of the vote.

Sanders has a particular disadvantage in superdelegates, who can choose who to support without regard for election results.

Clinton has the support of 467 superdelegates, to 26 for Sanders.