Republican Congressman Dan Lungren still represents a Republican district — but just barely. The California secretary of state says registered Republicans now outnumber Democrats by less than 5 percent in his Sacramento-area district, which includes parts of Alpine, Amador, Calaveras, Sacramento and Solano counties. It's the smallest edge for any California Republican congressman. Lungren's 3rd District is about 42 percent Republican and 37 percent Democratic. That's down nearly 2 percentage points from two years ago. Democrats are encouraged by the shift, which is part of a statewide decline in Republican voters. But a political analyst says Lungren still has the great advantage of being an incumbent when he runs for re-election in November.