Republicans hold a 219-212 majority in the House, with four vacancies. New maps are typically drawn once a decade after the census is conducted. Many states, including Texas, give legislators the power to draw maps. California is among states that rely on an independent commission that is supposed to be nonpartisan.

As Texas hurtles toward a flashpoint on a GOP effort to redraw congressional districts, California Democrats are about to answer with a plan of their own.

The California governor unveiled plans to pass a constitutional amendment to alter the state’s congressional districts to counteract possible GOP gains in Texas next year.