Last week, Lee endorsed
Texas Solicitor General Ted Cruz
(R), who is courting Tea Party support in his own bid to win the Republican nomination in the Texas Senate race.
Meanwhile, Flake remains the only officially declared candidate in the race to replace Kyl. He got off to quick start, with the Club For Growth raising $100,000 on behalf of the congressman on the first day after they endorsed him.
Rep. Trent Franks
(R-Ariz.), a social conservative who would offer a contrast to Flake's fiscal conservative reputation, is closely eying the race and has tentatively set
April 7 as the date he will announce whether or not he will make a bid. Republican sources in the state believe that Franks is leaning towards a run.