What to Watch in the New Hampshire Primary

New Hampshire voters head to the polls on Tuesday for the first presidential primary of the 2024 nomination cycle, in a state that has been known to throw curveballs at overwhelming favorites.

The withdrawal of Gov. Ron DeSantis from the Republican race on Sunday effectively left what had recently been a crowded field of candidates down to two: former President Donald J. Trump, and former Gov. Nikki Haley of South Carolina.

The national Democratic Party, pushed by President Biden, had wanted New Hampshire Democrats to break tradition and move their primary to the end of February. New Hampshire refused, leaving the president’s supporters to mount a write-in campaign for the absent Mr. Biden against Representative Dean Phillips of Minnesota, the self-help author Marianne Williams and 19 other Democrats whose names are on the ballot.

After Mr. Trump trounced his opponents in the Iowa caucuses last Monday, here is what to watch on Tuesday: