Community activist Niki Tsongas, the widow of the late Senator and presidential candiate Paul Tsongas, won a narrow victory in a special election today to replace former Rep. Marty Meehan. Tsongas beat farmer and businessman Jim Ogonowski by a narrow 51%-45% margin, in a district that Sen. John Kerry won by 17 points in 2004.

Check out Real Clear Politics tomorrow morning for complete analysis.