Allies of embattled GOP presidential candidate Newt Gingrich are coming to his defense against his ex-wife’s new and salacious charges, labeling Marianne as “unstable” and “unhinged.”

What’s more is that they are slapping at ABC, which is set to run an interview Thursday with Marianne Gingrich in which she claims the former speaker wanted an open marriage so he could date his current wife, Callista. Gingrich’s supporters claim the network is trying to get the Republican out of the race just as he’s peaking in the polls.

What was once a quiet campaign to distance Marianne from Gingrich has kicked in to high gear in advance of the interview and GOP presidential debate Thursday.

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