Newsom, who has framed the fight as one for the soul of democracy, told volunteers to keep up their efforts heading into Tuesday's election.
In a wide-ranging interview with NBC News, the California governor slammed the GOP-controlled Congress and the Supreme Court for bowing to Trump.
Gov. Newsom and national Democrats rallied supporters for Tuesday's Proposition 50 vote to redraw California's congressional districts before the midterms.
Newsom topped the bill featuring an array of high-profile Democrats boosting the initiatives. The opposition has condemned the initiative as bad governance and partisan politics.