Republicans have kept their majority on Arizona’s Corporation Commission despite clean energy groups spending millions to flip control of the utility regulatory body.

Just one Democratic candidate, Tolleson Mayor Anna Tovar, won an open seat on the commission. The other two open seats went to Republican candidates Lea Marquez Peterson, the only incumbent running, and Jim O’Connor, as both join current Republican Commissioner Justin Olson in solidifying the GOP majority. Tovar joins one other Democratic commissioner, Sandra Kennedy.