Republicans in the Texas House were poised on Wednesday to approve an aggressively partisan redistricting, overcoming Democratic protests and delivering to President Trump the congressional map he called for, designed Republicans to pick up five U.S. House seats. The redrawing of Texas’s maps was only the first battle in what is likely to be a bruising and protracted coast-to-coast clash over redistricting between states led by Republican and those led Democrats over the coming months. The California legislature is expected to vote Thursday on a newly drawn congressional map designed to flip as many as five Republican-held seats to the...