TV Ratings: Fox News Leads Decisive Night for the GOP

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Donald Trump solidifying his status as the presumptive nominee and Ted Cruz's concession bring plenty of viewers to the Indiana primary coverage.

Tuesday proved to be an especially eventful one in the 2016 presidential race — and the cable news networks performed especially well with all of the developments.

Fox News topped with total viewers and the demo of adults 25-54 during primetime and the most-watched hour. At 9 p.m. ET, when Donald Trump spoke about his Indiana Primary win and his status as the presumptive nominee, FNC averaged 5.25 million viewers and 1.3 million adults 25-54. Among total viewers, that puts it ahead of more than half of the broadcast networks (ABC, Fox and the CW) in the hour.

Not only did Trump seem to lock in the nomination in the hour, Ted Cruz bowed out of the race. CNN and MSNBC also peaked during the hour, with CNN averaging 3.3 million viewers and 1.2 million adults 25-54 and MSNBC delivering 1.8 million viewers and 500,000 adults 25-54.

Though the Democratic race is technically still open, with Bernie Sanders trailing Hillary Clinton significantly, remaining primary coverage won't likely pop the way Tuesday night's did. Instead, expect more bookings in an attempt to drive ratings between now and the conventions. CNN will air interviews with Clinton and Trump on Tuesday night.

On Wednesday afternoon, John Kasich, the last man standing in Trump's path to the nomination, plans to announce the end of his campaign in a statement from his home state, reports the AP.

See the rankings for all of May 3 primetime below:

FNC: 4.27 million viewers; 1.06 million adults 25-54
CNN: 2.62 million viewers;  896,000 adults 25-54
MSNBC: 1.55 million viewers; 413,000 adults 25-54

11:40 a.m. PT: Updated with Kasich