To conduct official business, at least 100 members of the 150-member Texas House must be present. Democrats hold 62 of the seats in the majority-Republican chamber. At least 51 Democratic members are leaving the state, said Josh Rush Nisenson, spokesperson for the House Democratic Caucus.

Democrats have left Texas for a second time in four years in an effort to block a vote by denying the legislature a quorum.

The map includes redrawn districts that would help defend the Republicans' slim House majority in next year's midterms.