Redistricting, retirements and realignments are reshaping politics in Texas.

The state is home to what is likely to be one of the most expensive and divisive Senate contests next year, with fierce battles on both sides.

The House landscape has been significantly overhauled by a mid-decade redraw of Texas’ congressional map at the urging of President Donald Trump, which could help the GOP flip up to five additional seats.

And the Lone Star State’s House delegation faces a wave of departures. Nine members are either retiring or running for another office next year: six Republicans and three Democrats, all vacating seats seen as safe for their party. The exodus could erode the delegation’s clout in the House.

Larger trends are at play as well. Republicans made significant gains with wor

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