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 "Roger Marshall (politician)"): Roger W. Marshall (born August 9, 1960) is an American politician and obstetrician.
Relevant evidence: Yes