The big news about former Microsoft CEO Steve Ballmer this week was his purchase of the Clippers for $2 billion, but it appears hes dipped into the coffers recently for political activism, too. According to newly released financial disclosures, Ballmer and his wife, Connie, have poured $580,000 into gun control efforts in Washington state. Following the Sandy Hook shootings, gun control advocates proposed a ballot initiative to close loopholes that allow for background check-free purchases of firearms, if the purchases are made online or at gun shows. Because of Ballmer — and other ex-Microsoft bigshots including Bill Gates and Jon Shirley, who have made smaller donations — the initiative is now significantly outpacing a competing gun-rights campaign, at about $3.4 million to $1.1 million.