Texas Republicans are powering ahead with an aggressive strategy backed by President Donald Trump to seize control of multiple Democratic seats in next year’s critical midterm: redrawing the state’s congressional map in favor of more GOP seats.

The proposal would redraw district lines in ways that target current Democratic members of Congress in districts in South Texas and around Austin, Dallas and Houston.

If the map is approved and no members move districts, the new boundaries set the stage for half a dozen incumbent-on-incumbent matchups next year.