Indiana redistricting battle intensifies as Trump warns Republican lawmakers they face primary challenges if they block congressional map redistricting plans.

Indiana state House Republicans passed a new state congressional map Friday at the behest of President Donald Trump, advancing the legislation to the state Senate, where it is unclear if enough lawmakers will support its final passage.

The Indiana legislature on Monday began the process of mid-decade redistricting with a map that could allow Republicans to flip up to two congressional seats.