TUCSON, Ariz. (AP) -- Republican challenger Martha McSally's lead over Democratic Rep. Ron Barber in southern Arizona's 2nd Congressional District has fallen to just 341 votes.
The change came after Pima County elections officials reversed course and decided to process some ballots on Sunday. McSally's lead had been 509 votes but slipped after 2,204 early ballots from the district were counted.
Pima County now has about 7,300 verified provisional ballots to count, and the county recorder expects to transmit about 2,700 more provisional ballots for tabulation. Elections officials say they'll count ballots Monday.
About a third of those are expected to be from outside Barber's district.
Meanwhile, county Recorder F. Ann Rodriquez rejected a request from lawyers for McSally's campaign to stop verifying some provisional ballots.