Washington — Voters in 15 states are poised to cast their ballots for the 2024 Republican presidential nomination on Super Tuesday, March 5, with poll opening and closing times varying by state.

There are 13 primaries and two caucuses set to take place, with 874 delegates at stake for the two GOP candidates still in the race — former President Donald Trump and former South Carolina governor and U.N. Ambassador Nikki Haley. 

Super Tuesday is the biggest voting day of the 2024 presidential election, and Trump comes into it with wins in all but one of the Republican contests held so far — Haley notched a win in the District of Columbia’s primary on Sunday— and a commanding lead in the delegate race.

Elections for the Democratic presidential nomination are also taking place in 15 states and one U.S. territory, American Samoa, though President Biden does not have a major challenger.

Alabama voting hours on Super Tuesday

Polling places in Alabama open at 7 a.m. and close at 7 p.m. local time (8 a.m. ET to 8 p.m. ET).

Alaska voting hours on Super Tuesday

Polling locations open at 7 a.m. and close at 8 p.m. local time (11 a.m. ET to 12 a.m. ET). 

Arkansas voting hours on Super Tuesday

Voters in Arkansas can cast their ballots from 7:30 a.m. to 7:30 p.m. local time (8:30 a.m. ET to 8:30 p.m. ET).

California voting hours on Super Tuesday

Polls open at 7 a.m. and close at 8 p.m. local time (10 a.m. ET to 11 p.m. ET).

Colorado voting hours on Super Tuesday

In Colorado, voters can go to the polls to cast their ballots between 7 a.m. and 7 p.m. local time (9 a.m. ET to 9 p.m. ET).

Maine voting hours on Super Tuesday

Depending on the municipality and its population, polling locations in Maine open between 6 a.m. and 10 a.m. local time. All polls in the state close at 8 p.m. local time.

Massachusetts voting hours on Super Tuesday

Voting locations in Massachusetts open at 7 a.m. and close at 8 p.m. local time.

Minnesota voting hours on Super Tuesday

Polls open in Minnesota open at 7 a.m. and close at 8 p.m. local time (8 a.m. ET to 9 p.m. ET).

North Carolina voting hours on Super Tuesday

In North Carolina, polling places are open from 6:30 a.m. to 7:30 p.m. local time.

Oklahoma voting hours on Super Tuesday

Polls in the state open at 7 a.m. and close at 7 p.m. local time (8 a.m. ET to 8 p.m. ET).

Tennessee voting hours on Super Tuesday

Polls in Tennessee open at 7 a.m. and close at 7 p.m. local time (8 a.m. ET to 8 p.m. ET).

Texas voting hours on Super Tuesday

All polling locations in the state open at 7 a.m. and close at 7 p.m. local time (8 a.m. ET to 8 p.m. ET for most of the state. Three counties in West Texas are in Mountain time, so polls open at 9 a.m. ET and close at 9 p.m. ET).

Utah voting hours on Super Tuesday

Vote centers in Utah are open from 7 a.m. to 8 p.m. local time (9 a.m. ET to 10 a.m. ET).

Vermont voting hours on Super Tuesday

Polls close at 7 p.m. local time.

Virginia voting hours on Super Tuesday

Polls close at 7 p.m. local time.

How to watch Super Tuesday election results 

• What: Super Tuesday primary and caucus results
• Date:  Tuesday, March 5, 2024
• Time: First polls close at 7 p.m. ET — watch live streaming coverage all evening on the CBS News app, CBSNews.com and Paramount+
• On TV: A CBS News special anchored by Norah O’Donnell airs from 10-11 p.m. ET on CBS television stations (find your local station here)
• Online stream: Live on CBS News in the video player above and on your mobile or streaming device