WaPo:

The conservative nonprofit advocacy group American Action Network raised more than $26 million for its efforts to support the agenda of the House GOP leadership in the fiscal year ending in June 2015, a record for the organization, according to new tax filings set to be submitted this week.

The robust fundraising shows how the nonprofit and its sister super PAC Congressional Leadership Fund have cemented their roles as the dominant outside allies of the Republican House leaders. The groups are currently in the strongest financial positions in their history, said Mike Shields, who is president of both organizations.