AMES, Iowa – On the surface, Iowa's Republican presidential caucuses seem healthier than ever: Would-be candidates are flocking here mere months after the last White House race ended, drawing sizable crowds and ample news coverage. Sen. Ted Cruz of Texas and former Sen. Rick Santorum of Pennsylvania were here for a Christian conservative conference this month, and Sen. Rand Paul of Kentucky has come to the state twice since May.
But Iowa's political leaders worry that looks can be deceiving and that the prized role of the Republican caucuses is in jeopardy. Establishment Republicans fear that conservatives have become such a dominant force here that they may drive mainstream presidential candidates away.
That would relegate the caucuses to little more than a test of the party's right-wing sentiment.
"It just creates a self-selecting field," said David Kochel, a longtime Iowa Republican strategist. "The spotlight will still be here, because the Democrats are all going to show up, but with Republicans it could be optional."
New Hampshire is pegged as the more unpredictable of the two kickoff states, prone to rewarding insurgents and providing momentum for campaigns in subsequent states.
It has been Iowa in recent years, however, that propelled conservative upstarts — Mike Huckabee in 2008 and Santorum in 2012 — who ultimately failed to gain mainstream support. The party's eventual Republican nominees waged less than intense efforts in Iowa and paid no penalty.
That precedent could embolden candidates like Gov. Chris Christie of New Jersey and Sen. Marco Rubio of Florida to spend their time elsewhere and play down or even skip the state altogether.
"You're going to see conservatives probably not play as much in New Hampshire, and you're going to see moderates not play here," Santorum said in an interview this month before he addressed the gathering of Christian conservatives.