Indiana's primary will test President Donald Trump's enduring power over the Republican Party as he tries to dislodge state senators who refused to go along with his call to redraw the state

Early results come in as Trump's endorsements in Indiana's Republican primary challenge eight state senators who blocked redistricting efforts.

Indiana Republican state lawmakers who broke with President Donald Trump over his call to redraw the state’s congressional district lines are facing primary challengers who are backed by Trump and national conservative groups.