Actually derailing the redistricting effort, which was one of nearly 20 items added to the special session agenda by Gov. Greg Abbott, would be a herculean lift fraught with risk for legislative Democrats. Delaying the process with a walkout would require strong participation by most of the party's caucus, and could carry steep financial costs.

WASHINGTON (AP) — President Donald Trump said Tuesday that he is pushing Texas Republicans to redraw the state’s congressional maps to create more House seats favorable to his party, part of a broader effort to help the GOP retain control of the chamber in next year’s midterm elections.

Republicans currently hold 25 of Texas' seats in the U.S. House of Representatives, while Democrats have 13 seats.