IN OUR ENDORSEMENTS for contested seats for the House of Delegates in Northern Virginia over the last few days, The Post omitted two races in Prince William County. Our choices in those contests are listed below in bold type.

Previous endorsements are online at www.wapo.st/VAendorsements2013/.

To determine your legislative district and candidates on your ballot, go to http://1.usa.gov/1hIuAb.

District 50: Republican Jackson H. Miller, a former Prince William County police officer and Manassas city council member, has deep roots in this district. That’s why it’s hard to understand why the three-term incumbent opposed a landmark transportation finance bill that will pump critically needed dollars into major transportation projects that his own constituents badly want and need. Mr. Miller, now a real estate agent, argues that the higher taxes will put Prince William at a competitive disadvantage compared to neighboring counties like Stafford and Fauquier. That’s not credible; in fact, over time Prince William will benefit enormously as its road system is expanded and modernized to accommodate a fast-growing population. Nonetheless, Mr. Miller’s extensive knowledge of the area make him a better choice than Democrat Richard Cabellos, who only moved to the county three years ago. Mr. Cabellos, who runs a community center in Fairfax County, is well meaning. But his status as a newcomer to the district means he is unlikely to represent it effectively.

District 51: Richard L. Anderson, the two-term Republican incumbent, is a nice guy who has pushed sensible legislation to help veterans, of which there are a lot in this Prince William district. However, his voting record — opposing a well-qualified judicial nominee who was gay; voting against the state’s most important transportation bill in a quarter century; voting for the fetal personhood bill, which would all but eliminate women’s right to choose — puts him in lockstep with the tea party. That stance ill serves his mainly moderate district, which would be better off represented by the Democratic challenger, Roy Reed Heddleston, a smart, retired Air Force procurement officer with real expertise in finance issues. Mr. Heddleston, now a consultant, has the background and experience to play an important role in Richmond. Mr. Anderson’s rigid partisanship puts him on the fringes.