It looks like he's already getting a primary challenger :
Alan LaPolice, who challenged Huelskamp in 2014 and might do so again, describes himself as a conservative, but he was backed by agricultural interests last cycle. And the opposition's favorite prospective candidate, physician Roger Marshall, similarly has described himself as "very conservative" and a "God-fearing Christian," but has also avoided angering the Republican establishment or potential donors, said Huelskamp campaign spokesman Mark Kelly.
Huelskamp noted that Marshall announced he might enter the race shortly after Huelskamp voted against John Boehner for speaker of the House. "It's no surprise that Mr. Marshall announced his interest within a week of my vote for new leadership in the U.S. House," Huelskamp said in a statement. Boehner and other members of the establishment want "another business-as-usual politician" who will go along with the status quo, he said.
(Huelskamp also cited Marshall's "history of writing big checks to liberal Republicans," although those donations generally went to other members of Kansas's congressional delegation, and even included $750 to Huelskamp himself between 2010 and 2012, according to the Center for Responsive Politics.)
Despite his trouble in 2014, Huelskamp still has support from some tea-party groups.