Stellar night for AP race calling
A night of fast and accurate race calls by The Associated Press on Super Tuesday culminated as polls closed in California at 8 p.m. PT, when AP declared Bernie Sanders the winner of the night's biggest prize.
How AP will call Iowa winner
The Associated Press will declare the winner of the Feb. 3 Iowa caucuses based on the number of state delegate equivalents awarded to the candidates.
Why AP has yet to call Kentucky governor's race
At 10:02 p.m. ET on Tuesday, AP sent a news alert to its member news organizations and customers that the race for governor in Kentucky was too close to call.
AP Election Decision Editor Stephen Ohlemacher explains why:
Beyond exit polls: A new way to survey voters
In its search for new ways to survey a changing electorate, AP continued its experiments aimed at evolving the traditional, in-person exit poll in 2017, testing a new approach aimed at reaching both those who vote in person on Election Day and the increasing number of voters who cast ballots early -- roughly 40 percent in 2016.
Calling the presidential race state by state
At 2:29 a.m. ET on Wednesday, The Associated Press called the race for Donald Trump in a Flash, reserved for news alerts of the highest importance.