From https://www.azcentral.com/story/news/politics/elections/2016/08/31/john-mccain-leading-kelli-ward-republican-senate-primary/89518792/

... Ward, 47, struggled to raise the amount of money that she needed to be competitive against McCain. The big-spending national "tea party" organizations such as FreedomWorks, the Club for Growth and the Senate Conservatives Fund took a pass on helping Ward, although a pro-Ward Super PAC late in the campaign got a financial boost from Long Island billionaire Robert Mercer, a mega donor associated with Republican presidential nominee Donald Trump and U.S. Sen. Ted Cruz, R-Texas. ...