From Spruiell piece:

“I don’t know whether he’s running or not, but I think he’d be a very strong candidate,” Club for Growth President Pat Toomey, a former three-term congressman from Pennsylvania, tells NRO. “Roy Blunt and John Boehner and John Shadegg are all good men, but I think politically, Roy’s biggest liability is that he’s too closely associated with the status quo. Boehner represents a break from the status quo, but John Shadegg could really galvanize conservatives and make this a very interesting race.”