OLYMPIA, Wash. (AP) -- Attorney General Rob McKenna is preparing to officially launch a campaign for governor. A Republican familiar with the McKenna's plans said Tuesday that he will formally begin his 2012 campaign during an event Wednesday night. The person spoke on condition of anonymity so as not to pre-empt McKenna's announcement. Washington state hasn't had a Republican governor since John Spellman left office in 1985. McKenna was first elected attorney general in 2004 after serving several years on the King County council. He is president-elect of the National Association of Attorneys General. Democratic Gov. Chris Gregoire said Monday...