Town halls are a great way for presidential candidates to connect with voters. But the close-quarter get-togethers also leave the candidates a bit exposed. Add pranksters into the formula and anything can happen.
Both Sen. Elizabeth Warren and former Vice President Joe Biden were hit by pranksters as they campaigned in Iowa ahead of caucuses on Monday. Warren was a good sport about it all, while Biden was a bit curmudgeonly (though he did get in a zinger).
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