Republican lawmakers pushed the map through over fierce Democratic opposition, positioning the GOP to net up to five additional seats in Texas.

The Texas Senate approved the measure after a heated debate, marking a major step in a mid-decade redistricting effort backed by President Trump.

The Texas Senate passed HB 4, the state’s congressional redistricting plan, which changes nearly all districts and could flip up to five seats from blue to red. It passed along party lines Friday by a vote of 18-11,