Question: Kansas's 1st congressional district is a congressional district in the U.S. state of Kansas, Huelskamp was re-elected twice in 2012 and 2014, but lost the 2016 Republican primary for a fourth term to which obstetrician, and an American politician?
Sentence (from "Kansas's 1st congressional district"): Huelskamp was re-elected twice in 2012 and 2014, but lost the 2016 Republican primary for a fourth term to obstetrician Roger Marshall.
Relevant evidence: Yes