Bloomberg helps Democratic governors' group close gap on Republicans

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A national Republican group devoted to helping elect GOP governors has outraised its Democratic counterpart by more than $20 million in the first nine months of this year, but reports filed Wednesday with the Internal Revenue Service show that the gap is narrowing.

Though the Republican Governors Association raised about $68 million through the end of September, the Democratic Governors Association has been catching up with a record haul of more than $45 million, fueled by labor unions and former New York City mayor, billionaire and political independent, Michael Bloomberg.

Related: Who's calling the shots in the states?

The groups were neck-and-neck in the most recent quarter, with the Democrats only a half-million shy of the Republican group, which counts energy companies and billionaires David Koch and Sheldon Adelson among its top donors.

Battling over 36 governorships up for election this year, the two Washington, D.C.,-based groups have used those donations to go head-to-head on the airwaves, contribute directly to candidates and fund other political groups.

They spend in their own names and through a network of subsidiaries, with names such as Right Direction on the Republican side and Jobs and Opportunity on the Democratic side.

Related: Gubernatorial hopefuls outspend U.S. Senate candidates

On television alone, the groups and their state branches account for nearly one-third of all television spending by independent groups in state-level races.

The Republican group has used its fundraising edge to purchase an estimated $19.7 million in television ads in 16 states through Oct. 13, more than any other non-party group in the country, according to a Center for Public Integrity analysis of preliminary data from media tracking firm Kantar Media/CMAG.

The Democratic Governors Association has been the second-leading independent group, buying an estimated $12.3 million worth of ads in five states.

Related: Who’s trying to influence your vote?

The Republican spending spree has been backed by multimillion-dollar donations in 2014 from a who’s who of Republican political donors.

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This story is part of Who’s Calling the Shots in State Politics?. The Center exposes the powerful special interests that drive elections and policy in the states. Click here to read more stories in this blog.

Copyright 2014 The Center for Public Integrity. This story was published by The Center for Public Integrity, a nonprofit, nonpartisan investigative news organization in Washington, D.C.