Matea Gold for WaPo:
The innocuous-sounding group was among a wave of organizations funded by secret donors that set a new high-water mark in the 2014 midterms, spending more than $170 million on congressional races, according to the nonpartisan Center for Responsive Politics.
And as the Renfroe case suggests, it wasn’t just high-profile, expensive Senate contests: Secret-money groups had a major presence in more than two dozen lesser-known House races as well, according to a Washington Post analysis of campaign finance data compiled by CRP.
In 13 House races, non-disclosing groups spent at least $1 million on political ads and voter outreach. In another 17 House campaigns, they made up more than half of the spending by independent groups