Democrats who run populous states are considering redistricting, but some of them face a hurdle: Their parties don’t have control over drawing legislative maps. Instead, the power is in the hands of independent commissions, something often left-leaning pro-democracy advocates have supported to enact fair maps that reduce gerrymandering.

California Governor Gavin Newsom led a campaign-style rally on Thursday for a redistricting plan to foil what he called President Donald Trump's bid to rig the next congressional race and cement his Republican House majority by redrawing the political map of Texas.