Four states have so far weighed in on the 2016 race for the White House: Iowa, New Hampshire, Nevada and South Carolina.
Here are the key upcoming political dates, from primary debates and statewide caucus votes to national conventions and the big day on November 8:
23: Nevada Republican caucus
25: Republican debate in Houston, Texas
27: South Carolina Democratic primary
1: “Super Tuesday” contests in several states including Alabama, Arkansas, Colorado, Georgia, Minnesota, Oklahoma, Tennessee, Texas, Vermont and Virginia.
3: Republican debate in Detroit, Michigan
5: Kansas caucuses, Kentucky Republican caucus, Louisiana primaries, Maine Republican caucus, Nebraska Democratic caucus
6: Maine Democratic caucus, Puerto Rico Republican primary. Democratic debate in Flint, Michigan
8: Hawaii Republican caucus, Idaho Republican primary, Michigan and Mississippi primaries
9: Democratic debate in Miami, Florida
10: Republican debate in Miami, Florida
12: Washington, DC Republican convention
15: Primaries in five major states: Florida, Illinois, Missouri, North Carolina and Ohio
21: Republican debate in Salt Lake City, Utah
22: Arizona and Utah primaries, Idaho Democratic caucus
26: Democratic caucuses in Alaska, Hawaii and Washington state
5: Wisconsin primaries
9: Wyoming Democratic caucus
19: New York primaries
26: Primaries in five northeastern states: Connecticut, Delaware, Maryland, Pennsylvania and Rhode Island
3: Indiana primaries
10: Nebraska Republican primary, West Virginia primaries
17: Kentucky Democratic primary, Oregon primaries
24: Washington state Republican primary
7: Primaries in California, Montana, New Jersey, New Mexico and South Dakota.
14: Washington, DC Democratic primary. Final day of primaries.
18-21: Republican National Convention in Cleveland, Ohio
25-28: Democratic National Convention in Philadelphia, Pennsylvania
Absentee or in-person early voting is expected to begin in several states
26: First presidential debate at Wright State University in Dayton, Ohio
4: Vice presidential debate at Longwood University in Farmville, Virginia
9: Second presidential debate at Washington University in St Louis, Missouri
19: Third and final presidential debate at the University of Nevada, Las Vegas
8: Election day, established by law as the Tuesday following the first Monday in November
20: Barack Obama leaves the White House. Inauguration of 45th president of the United States.