Arcadia, Sierra Madre and Bradbury are holding elections today on tax measures and city council members. Arcadia voters will choose two City Council members from the candidates running--Gary Kovacic, John Wuo, Sho Tay, Henry Nunez, and Mary Dougherty--and vote on Measure D, the extension ofthe hotel room tax from a 30-day maximum to a 90-day stay. Arcadia's election is being conducted through an all-mail ballot for the first time.