(FOX NEWS) — Newt Gingrich acknowledged Sunday that his campaign is “operating on a shoestring,” as he signaled he is preparing to transition from candidate to surrogate in anticipation of Mitt Romney winning the nomination.

While not throwing in the towel just yet, the former House speaker spoke frequently in past tense about his presidential bid in an interview on “Fox News Sunday.” He said he wants to continue to try and influence the party platform, but said he’s already discussed with the Republican National Committee how he can best help the nominee defeat President Obama if it’s not him.

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