Washington (CNN) -- House Democrats are increasingly worried that an avalanche of outside spending by GOP groups will bury them this fall, putting more of their members at risk of losing, and jeopardizing their goal of winning back control of the House in 2016. Virtually no Democrat believes the party has a chance to pick up the 17 seats they need to regain control of the House after the 2014 midterms. But the House Democrats' campaign arm has been focused on a strategy to bolster Democrats in competitive districts and try to knock off some GOP members in districts won by Obama in 2012.
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Outside Democratic groups aren't spending the kind of cash the party expected
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Republican groups rolled out ad buys worth $3.7 million in recent days against four House Democrats
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Many Democratic groups more focused on keeping control of the Senate
While House @placeholder are feeling good about the midterms, they admit they could be doing better.