Republican voters in 15 states are casting their votes for the presidential nomination in either primary elections or caucuses on this Super Tuesday, with Democrats in 16 states and territories doing the same — the most elections happening on a single day in the 2024 race for the White House.

The main source of suspense today: whether former president Donald Trump will sweep all 15 contests from his last remaining rival, former South Carolina Gov. Nikki Haley.

The Super Tuesday races will award 874 Republican delegates, just over one-third of the total. As of Monday, Trump had 244 delegates compared to Haley’s 43 delegates. To win the nomination, Trump will need to cross 1,215 delegates.

On the Democratic side, 1,420 — or 36% of the 3,934 available delegates — will be up for grabs. Biden has 206 delegates as of Monday afternoon and needs 1,968 to lock down the nomination.

Follow The Post’s live updates for the latest news, polls, results and analysis on Super Tuesday: