Michael Grimm

The president's record of picking winners is mixed, and two races test his ability to move voters today. Democratic activists try to win a big governor's race and knock off a party leader in Congress.

President Trump is campaigning for South Carolina Gov. Henry McMaster ahead of Tuesday's primary, and he's also endorsed New York Rep. Dan Donovan. But both could still lose their primaries.

The Staten Island prosecutor at the center of the investigation into the death of Eric Garner easily won election to Congress as a Republican. He replaces disgraced former Rep. Michael Grimm, R-N.Y.