It is hard to keep track of donations for state and local races across the country, but Bloomberg has clearly devoted resources that the NRA can't even dream of. In 2015, Bloomberg spent $2.2 million on just two Virginia state Senate races. That is vastly more than the NRA was able to spend on any race for the U.S. Congress. In 2014, Bloomberg spent $150,000 in an unsuccessful attempt to unseat Milwaukee Sheriff David Clarke, an outspoken opponent of gun control. This is more than Clarke and his opponent spent on their own campaigns.