State supreme court In 1976, Porter was appointed by Governor
Richard F. Kneip to a seat as an associate justice of the
South Dakota Supreme Court, serving from 1977 to 1979. In his 1978 reelection bid, Porter was defeated by opponent
Jon Fosheim by 45 votes out of over 49,000 votes cast.
Federal judicial service Porter was nominated by President
Jimmy Carter, on March 15, 1979, to the
United States District Court for the District of South Dakota, to a new seat created by 92 Stat. 1629. He was confirmed by the
United States Senate, on May 10, 1979, and received his commission on May 11, 1979. He served as Chief Judge from 1985 to 1991. He assumed
senior status on March 16, 1992, taking inactive senior status in 1993. While he remained a federal judge, he no longer heard cases or participated in the business of the court. He remained in that status until his death.
Notable law clerk Among the judicial law clerks that served Porter was
Roberto Lange, also a United States district judge. ==Death==