Late in the election cycle, House Republicans are looking for more vulnerable Democratic incumbents to target, but a newly released poll suggests they won’t find one in California’s 18th district.

Democratic Rep. Dennis Cardoza led Republican rancher Mike Berryhill by 16 points in a J. Moore Methods, Inc., survey taken Sept. 27-29. Cardoza got 53 percent to Berryhill’s 37 percent in the poll taken for the Congressman’s campaign.

The poll differs from a SurveyUSA poll taken Oct. 5-6. In that poll, Cardoza led Berryhill by a much closer margin, 50 percent to 44 percent. Taken for KFSN-TV in Fresno, the poll took opinions from 800 registered voters in both English and Spanish.

Cardoza, a member of the fiscally conservative Blue Dog Coalition, was first elected in 2002. Since his first election, he has never fallen below 65 percent of the vote in a general election, and in November 2008 he was unopposed.