Georgia Republicans are under Trump's shadow as they choose Senate and governor nominees

Georgia U.S. Rep. Mike Collins and former college football coach Derek Dooley will compete in a runoff for the Republican nomination to face U.S. Sen. Jon Ossoff in November. (Matthew Pearson/WABE)

 Georgia Republicans were waging their latest fight over party identity in runoffs Tuesday that decide the nominees to face U.S. Sen. Jon Ossoff and defend the governor’s office against former Atlanta Mayor Keisha Lance Bottoms.

President Donald Trump is at the center of each contest.

In the Senate race, the president made a late endorsement of Rep. Mike Collins, a second-term congressman who calls himself a “MAGA warrior,” over Derek Dooley, a first-time candidate and former football coach who has the backing of outgoing Gov. Brian Kemp.