Former House Speaker Newt Gingrich said being Donald Trump’s No. 2 man in the White House would be a difficult offer to refuse.

“If he asked me, I’m certain I’m going to say I want to sit down and talk about it. I don’t think it’s an automatic yes,” Gingrich told “Fox News Sunday.”

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“I think we’d have to think through what does he think the job involves. If he could convince Callista and me that it’s doable and that it’s serious and that we would, in fact, contribute, I think we’d be very hard-pressed not to say `yes.’ ”

The presumptive GOP presidential nominee has said he’s eyeing about a half-dozen people to be his running mate this fall and Gingrich’s name has been rumored to be under consideration.

Gingrich ran for president in 2012, winning the South Carolina and Georgia primaries before Mitt Romney eventually grabbed the nomination.