Rockville, Md., April 25 – In what has been described as a race centered on “identity politics,” Maryland Democrats face a significant choice as they look to replace an icon of the U.S. Senate. After 30 years of services, Sen. Barbara A. Mikulski, the senior senator of Maryland, is retiring. Mikulski was a trailblazing leader and was the first woman in the Democratic Party to win a seat in the U.S. Senate outright. The contest to choose her replacement has been closely fought, deeply dividing and has garnered national attention. This Tuesday, Democratic voters will choose between Congresswoman Donna F. Edwards from Maryland’s 4th district and Congressman Chris Van Hollen from Maryland’s 8th District. Even as the primary vote draws near, polling showing a tight race between Edwards and Van Hollen.