The leaders

1,237 delegates needed for the nomination

2,382 delegates needed for the nomination

Republicans

Democrats

Current delegates

Potential delegates

Trump

Cruz

Rubio

Kasich

Carson

Clinton

Sanders

Trump saw a 168-delegate surge between March 1 and March 15.

Clinton saw a 445-delegate surge between March 1 and March 15.

Feb. 1

March 1

Super Tuesday

March 15

Polling predictions and primary results

Delegate expectations are calculated by using the latest reliable polling estimates of candidate support in combination with delegate allocation rules (proportional or winner take all). When quality polls are unavailable, the forecast gets cloudier: In such cases, candidate support is estimated using election results or polling from states with a similar political and demographic makeup.

Republicans

Democrats

Editor’s picks

The race to the Republican nomination

GRAPHIC | See how many delegates candidates are from moving on to the general election.

Who’s winning 2016?

GRAPHIC | Need to catch up on the presidential candidates? Here is who's winning in polling, endorsements and money.