Supporters of Republican presidential nominee Donald Trump watch as Fox News projects him the winner in Florida on Nov. 8, 2016. Fox is joining the Associated Press in a new experiment to measure voter preferences, that will be key to their projections on Election Night in 2018.

Supporters of Republican presidential nominee Donald Trump watch as Fox News projects him the winner in Florida on Nov. 8, 2016. Fox is joining the Associated Press in a new experiment to measure voter preferences, that will be key to their projections on Election Night inÂ