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.

Texas Democratic lawmakers who fled the state to deny a quorum are making their way back, each on their own timeline, multiple sources familiar with the matter told CBS News.

Democratic lawmakers who fled Texas to block a Republican redistricting plan are now returning individually, likely allowing the House to reconvene. Republicans aim to pass a map that could add five GOP congressional seats.