The Republican-controlled Texas state Senate passed the party’s new congressional maps late Friday, completing a legislative odyssey that included significant Democratic delays and sparked a nationwide scramble over redistricting in the process.

The Texas Senate on Saturday approved new congressional maps drawn to help Republicans win as many as five more House seats in next year’s midterm elections.

Republican lawmakers are pursuing the unusual mid-decade redistricting plan amid pressure from President Donald Trump to protect the GOP’s slim majority in the U.S. House.