Trump endorsement power faces key test in Georgia, Alabama runoffs: 5 primary races to watch

Primaries in Georgia and Alabama on Tuesday will end the suspense in a pair of high-stakes Republican primary runoffs for Senate, offering another test of President Trump's endorsement power in both states.

Trump made a last-minute endorsement over the weekend in Georgia, backing Rep.

Mike Collins (R) in the runoff to take on Sen.

Jon...