Support for Proposition 50 mainly comes from Democrats and their allies, which includes some influential politicians and powerful unions across California.

Governor Newsom expressed that California should not resist what he views as Trump’s attempt to manipulate the 2026 midterm elections through redistricting that favors his party. He suggests that without a revamped map, there’s a higher chance Republicans could retain control.

“If Texas hadn’t taken their recent steps, and if Trump hadn’t acted the way he did, we probably wouldn’t be in this situation,” Newsom stated in August.

Winning the House is essential for Democrats to counteract actions that negatively impact the Trump administration and the state, such as family separations, immigration raids, loss of federal research grants, and Medicaid cuts.

Unlike independent committees that function in public, the redistricting maps were created behind closed doors in Sacramento, which has prompted concerns over the lack of transparency in the process. The Yes on 50 campaign contends that in the end, it’s the voters who should have the power to establish an independent commission for districting.

The Proposition 50 campaign has attracted over $61 million from Democratic organizations and some of the state’s leading unions. Notable personal contributions include $2.5 million from venture capitalist Michael Moritz, $2 million from Netflix Chairman Reed Hastings, and $500,000 each from former Google CEO Eric Schmidt and Y Combinator co-founder Paul Graham.