Vidak's lead has now shrunk to just 648 votes-- just one percentage point. Costa picked up some votes from Fresno and Kern counties, where he holds an advantage.
Elections officials are still counting thousands of provisional and absentee ballots in both counties. And both candidates are watching the vote count closely.
"We expect that when the votes continue to come in both in Fresno and Kern county and when they are complete we will have a solid lead when all the votes are counted and that's what we want to make sure all the votes are counted," Rep. Jim Costa (D) Fresno said.
"We're still cautiously optimistic we worked hard and theres a lot of votes we counted. We want them all counted, want it done fairly we're watching all this we're in this to the end," Andy Vidak (R) Congressional Candidate said.
About 4,000 ballots have yet to be counted in Kern County. About 50,000 ballots have yet to be counted in Fresno County. A fifth of those are in the 20th Congressional District.
