Facing a federal indictment for misuse of campaign funds, Rep. Duncan Hunter (R-Alpine) is still the frontrunner in the race for the 50th Congressional District — although with a shrinking advantage over Democratic challenger Ammar Campa-Najjar.

According to a Survey USA poll released Monday, Hunter now has an eight-point lead over this opponent, 47 percent to 39 percent, with 13 percent undecided.

In the June primary, the top two finshers were Hunter, with 47 percent, and Campa-Najjar at 18 percent.

However, as the field of candidates has narrowed, Campa-Najjar appears to have consolidated support among Democrats and even potentially picked up backing among some swing voters.

The district, which Hunter has represented since it was redistricted about five years ago, covers much of East San Diego County, including Poway, Ramona, Alpine and Borrego Springs.