Congressional District 2 is proving pollsters right with predictions of a close race, with a razor-thin margin separating Rep. Ron Barber and his Republican rival, Martha McSally.
Barber leads by more than 5,000 votes in the first round of announced results, which reflects votes cast by early ballots.
Barber, a Democrat, is seeking his second full term in Arizona's Congressional District 2.
McSally narrowly lost to Barber in a similar match-up two years ago by 2,454 votes.
Ads dominated this race, flooding television airwaves, social media and radio stations.
One estimate suggests $16 million has been spent on television ads in CD2 since the beginning of the year.
People are also reading…
Congressional District 2 includes a portion of Pima county and all of Cochise County.
Watch the latest election results at Tucson.com/elections.
