Dino Rossi (born October 15, 1959) is a member of the Washington State Senate from the 45th district. He is an American commercial real estate executive, two-time Republican candidate for Governor of Washington, and former Republican candidate for United States Senate. His first run for the Governor's mansion in the 2004 election became the closest gubernatorial race in U.S. history; Rossi was certified as Governor-elect before losing a hand recount to Democrat Christine Gregoire. He ran for Governor of Washington again in 2008, losing to Gregoire 47% to 53%.
Rossi began his career in the commercial real estate industry and has continued to invest in and manage income properties. After the 2008 election, Rossi returned his full attention to real estate. During the spring of 2010 there was speculation that Rossi might enter the 2010 Senate race to challenge incumbent Patty Murray. Rossi entered the race on May 26, 2010. On August 17, 2010 Rossi defeated his Republican primary challengers, but lost to incumbent Senator Patty Murray (a Democrat) in the November 2 general election 47% to 52%.
Rossi was selected to fulfill a vacancy in the State Senate's 5th district in 2012 after the resignation of Cheryl Pflug. He was again selected in 2016 to fulfill a vacancy in the 45th district after the death of Andy Hill.