California Gov. Gavin Newsom said a measure on Tuesday’s election ballot that would redraw U.S. House maps wasn’t about drawing lines but about standing up to a bully.

The ballot measure would create partisan U.S. House maps outside of routine once-a-decade redistricting that in California is handled by an independent commission.

It’s an effort by Newsom, a Democrat, to counter a Trump-backed plan in Texas to gain five more Republican seats.

Newsom, a leading critic of Trump and possible candidate for the White House in 2028, spoke Monday to a labor union hall full of cheering union workers about to phone bank in effort to pass Proposition 50.

Newsom was joined on stage by former U.S. House Speaker Nancy Pelosi and other Democratic representatives from California, who all spoke of the damage they said Trump’s administration has done.

His wife, Jennifer Siebel Newsom, also spoke at the union rally, bashing Trump's presidency and urging California voters to approve Proposition 50.