New Hampshire may be one of the smallest states, but it traditionally has played an outsized role in the nation’s greatest task: election of the president. For decades the Granite State was ...

Voter Laura Colquhoun places her ballot in the ballot box while Iang Jeon watches, at the New Searles Elementary School polling in Nashua, N.H., on Tuesday. (Kayana Szymczak for The Wall Street ...