The resolution, which passed 36-0, comes just weeks after the Supreme Court announced it would consider a Texas case challenging the way electoral districts are drawn.
At issue is whether voting districts should continue to be drawn by using census population data, which include noncitizen immigrants as well as children. Conservative challengers want the system changed to count only citizens who are eligible to vote.
Senate President Kevin de León (D-Los Angeles), author of the resolution, said he was "deeply concerned by the inexplicable decision" by the Supreme Court to hear the case. Since the Supreme Court established the principle of "one person, one vote" in 1964, it has ensured that all people in the country have received fair representation, the senator said.
"This challenge now is nothing more than a cynical and transparent effort to turn back the clock on decades of legal precedent and return an unjust and unequal system of redistricting, one that greatly disadvantages diverse and urban communities,'' De León said.
Switching to electoral districts based on eligible voters would have a major effect on California and other states with large noncitizen populations, and especially cities such as Los Angeles. De León's Senate district, which includes portions of downtown L.A. and the city's Eastside, could be reconfigured and combined with parts of the city.
Republican Senate leader