Seventeen blue states and D.C. belong to the National Popular Vote Interstate Compact, nearing the 270 electoral votes to activate it.

Each state has its own rules for when and how to register, and one state doesn’t even require registering. Here’s what to know.

Nearly 2.2 million City voters had already cast their ballots in this year’s presidential race as of 6 p.m. Tuesday, according to the city’s Board of Elections. More than 1 million New Yorkers went to the polls on Tuesday alone,