Question: What is the name of this American politician, member of the Minnesta Democratic-Farmer-Labor Party, the U.S. Representative for Minnesota's 7 congressional district, and the most senior representative from Minnesota, representing Dewey Township, Roseau County, Minnesota?  
Sentence (from "Collin Peterson"): Collin Clark Peterson (born June 29, 1944) is an American politician, member of the Minnesota Democratic–Farmer–Labor Party, the U.S. Representative for Minnesota 's 7 congressional district , and the most senior representative from Minnesota, serving since 1991.
Relevant evidence: Yes