U.S. Rep. Roscoe Bartlett, R-Md., was soundly defeating his primary opponent in the 6th Congressional District Tuesday night.
He led challenger Joseph Krysztoforski by a margin of 41,746 to 10,918 at presstime.
On the Democratic side, Andrew Duck led Barry Kissin 20,849 to 14,329 for that party's nomination.
The sixth district includes all of Garrett, Allegany, Washington, Frederick and Carroll counties, and parts of Baltimore, Harford and Montgomery counties.
Bartlett, first elected to Congress in 1992, holds a Ph.D in human physiology from the University of Maryland and is a former researcher and university professor. Bartlett serves on the House Armed Services Committee, the Science Committee and the Small Business Committee. He is running for his eighth two-year term.
Krysztoforski, 52, is a retired management consultant and entrepreneur, according to his Web site, and has held executive positions with a number of corporations, including First Data Corp. and Citicorp. A native New Yorker, he has been a Maryland resident since 1988.