Utility regulator Robert Burns on Tuesday refused to vote for a bill adjustment for Arizona Public Service Co., saying he will not advance any of the utility’s business matters until it complies with his request to review any spending it has done on elections. “Until APS complies with my request in its entirety, I will be voting no on all APS matters that do not impact the safety and health of ratepayers,” Burns said in a statement shared with The Arizona Republic. APS is widely believed to have contributed to the successful campaigns of two fellow utility regulators, Tom Forese and Doug Little, in the 2014 elections. APS has not denied supporting independent political, or “dark money,” groups that supported Forese and Little. But the company has declined to provide Burns with documentation he has requested regarding the company’s political spending. Tuesday’s request from APS was a routine adjustment to one of the many line items on APS bills. It would have added 34 cents to the average customer bill. But with Burns’ “no” vote, Commissioner Andy Tobin’s recusal from the vote because of a potential conflict of interest, and Commissioner Bob Stump’s absence, the matter failed on a 2-1 vote.