Texas Republicans will again try to convene the state Legislature Monday for a vote on redrawing congressional maps in their party's favor, an effort that already sparked a national political brawl and prompted Democratic lawmakers to leave the state to deny Republicans the quorum they need.

A Republican proposal to add five Republican congressional seats in Texas imperils Democrats’ midterm prospects.

Fleeing lawmakers in Texas are unlikely to stop Republicans from redrawing the state’s congressional maps, but their effort has offered a rallying cry—and a reminder of the Democratic Party’s weaknesses.