Trump's endorsement power faces crucial tests in closely watched Georgia and Alabama GOP runoff elections

While he isn't on the ballot, President Donald Trump's immense clout over the GOP faces more key tests on Tuesday in high-stakes Republican runoffs in Georgia and Alabama.

Trump-endorsed candidates are fighting in competitive showdowns against Republican rivals for the GOP gubernatorial and Senate nominations in battleground Georgia and for the Senate in solidly red Alabama.

Tuesday's contests in Georgia and Alabama come as Oklahoma and the District of Columbia hold primary elections...