Congressman Andy Harris, whose district includes the entirety of Maryland’s Eastern Shore, has yet another Democratic challenger in his 2012 bid for reelection, a fellow physician. Dr. John LaFerla of Chestertown officially filed his candidacy forms for the U.S. House of Representatives with the Maryland State Board of Elections. Along with Cockeysville businesswoman Wendy Rosen, LaFerla is the second Democrat signed up to run against Rep. Harris, R-Md.-1st.