LOS ANGELES — Democrats have run California for years, but in a nationally critical election the party is being confronted by the limits of its own power: the race for governor is out of control.

Barely a month before the start of mail-in voting, Democratic leaders are openly dreading the possible loss of a statewide election for the first time in two decades. As candidates jockey in a crowded field, the contest has degenerated into finger-pointing over debate eligibility , identity politics and 2025 ballot counting , issues distant from voters struggling with the soaring cost of gas and groceries.