Tim Eyman's anti-tax initiatives have developed, he admits, "a partisan tinge" over the years. But Washington's ballot-measure king says he finally has found an issue that unites voters across the aisle: red-light cameras.

An Eyman-led backlash against the cameras is sweeping the state and raising ethical and legal questions about their use for public safety and revenue.

Last year, 71 percent of Mukilteo voters said they wanted to ban the cameras, which snap photos of cars running red lights, and tickets are mailed to their owners. Camera measures are headed for the November ballot in Longview, Bellingham and Monroe, and signature-gathering is under way in Redmond and Wenatchee.

All but the Redmond effort have gone to court. The state Supreme Court has yet to rule on whether state law allows voters to ban the cameras, so the measures are moving forward without much legal clarity.