OVERLAND PARK, Kan. (AP) – Republican presidential caucuses in Kansas are shaping up as a three-way race between Donald Trump, Ted Cruz and Marco Rubio.

Hundreds of GOP activists mingled Saturday with elected officials at the state GOP’s biggest annual convention. It is only two weeks from March 5th presidential caucuses for both parties in Kansas.

Rubio emerged as the candidate of the state party’s establishment after Governor Sam Brownback and U.S. Senator Pat Roberts endorsed the Florida senator.

But Republican activists said Trump, the billionaire New York businessman, and Cruz, a Texas senator, already enjoyed solid support when Rubio picked up his endorsements. Trump won the South Carolina primary on Saturday.

Kansas proved itself contrarian in 2008 and 2010. Caucus-goers gave victories to ex-Arkansas Gov. Mike Huckabee and former Pennsylvania Sen. Rick Santorum over eventual nominees John McCain and Mitt Romney.