Freshman U.S. Rep. Doug Collins has kept busy representing his conservative district during his first six months in Congress, but he’s also positioning himself for re-election and solidifying his base by visiting his district regularly, a political expert said. The Republican from North Hall County represents the 9th District in Northeast Georgia, a solidly conservative stretch of the state covering 17 counties and parts of three others. He has championed his constituents’ issues in Washington in the laws he has introduced and supported, the issues he has pushed and the collaborations he has created with colleagues.