Sen. Barbara Mikulski retiring: Will Martin O'Malley run?

Sen. Barbara Mikulski (D) of Maryland is retiring after five terms in office, according to numerous news reports. The longest-serving female senator in US history been a legislative force in her home state and the nation for a generation, from her political beginnings as a neighborhood activist who helped block a highway through Baltimore’s Fells Point neighborhood, to her service as the first woman to chair the powerful Senate Appropriations Committee. The former governor is setting up for a