Politics makes strange bedfellows, and apparently so does late-night television. Wednesday on “The Tonight Show,” “Jersey Shore” star and mom-to-be Nicole “Snooki” Polizzi found herself on Jay Leno’s couch, seated next to former presidential candidate Newt Gingrich. It was an odd pairing, to say the least, but by the end of the segment, Snooks and Gingrich were, to quote another New Jersey reality-TV star, “as thick as thieves.”