Mr. MacKenzie is the treasurer of nine other active political action committees that have raised a combined $10.1 million from individuals since the beginning of last year. The committees include the Conservative StrikeForce, Freedom’s Defense Fund and the Black Republican PAC. Almost all of them employ similar techniques: using direct mail to raise hundreds of thousands of dollars, most of which is spent on more fund-raising activities, although in the past some of the committees ran television advertisements. Mr. MacKenzie, who lives in Arlington, Va., and previously worked on the presidential campaigns of Ronald Reagan, Jack Kemp and Patrick Buchanan, did not respond to several attempts to reach him for comment. With the exception of one committee, the Tea Party Victory Fund, which spends about half of its money on elections, these PACs spend less than 10 percent of their money on getting someone elected. Combined, the PACs have spent $418,392 — or 4.1 percent of the money raised — on candidates.