Republicans can move ahead with redrawing Texas’ congressional districts now that Democratic lawmakers have returned to the state.

Republicans are reportedly moving forward with redistricting efforts in Florida, Ohio, and Missouri, while Democrats look at maps in Maryland and California.

This week marks a flashpoint in an escalating and unprecedented fight over redistricting, with the country’s two most populous states taking center stage and control of the US House during the second half of President Donald Trump’s term potentially at stake.