Regrettably, this is untrue. Most of the money comes from Wall Street, K Street and corporate donors. The GOPe will always have the money it needs.
What needs to be done is rob the GOP of voters. The money is useless if no one votes for you.
IMP support also means vote. My GOP Congressman Chuck Fleischmann has lost my vote for good as of Thursday night. My two Stooges RINODEM Senators never had my vote not even for Lamar Alexander's first term. I knew better.