A little over a month after announcing his 4th district exploratory effort, Prince George’s County State’s Attorney Glenn Ivey (D) announced he will not run for Congress in 2010 and instead will enter the private sector at the end of his term.

Ivey, a former senior staffer on Capitol Hill who was appointed chairman of the Maryland Public Service Commission by former Gov. Parris Glendening (D), is a well-known figure in Prince George’s politics who was also viewed as a possible contender for the county executive post next year.

Ivey’s interest in challenging Rep. Donna Edwards in the Democratic primary had set up the possibility of another highly competitive primary in the district, which is based in Prince George’s and eastern Montgomery counties.

Edwards knocked off then-Rep. Albert Wynn in the 2008 Democratic primary after narrowly losing to him in 2006. She won a special election in the 4th district after Wynn resigned in the wake of his primary loss.

State Del. Herman Taylor (D) is also contemplating entering the 4th district primary.