Rep. G.K. Butterfield, N.C.-1, a Democrat, has officially announced he'll retire at the end of this term in Congress. Originally from Wilson, Butterfield, 74, has served in Congress since 2004. He has been in Congress for 18 years, representing a district that runs along North Carolina's northern border with Virginia. Butterfield won his first election to Congress by more than 71% and has handily won the seat in each election since, winning by margins well into the 70's.