Republican Congresswoman Martha McSally, who is in a fight for Senator Jeff Flake's seat in Arizona, is back in a dead heat contest with Democrat opponent Kysten Sinema as the final hours of the race close in.
Last week a poll from Ohio Predictive Insights and local ABC15 News showed McSally pulling ahead by seven. Just one day before voters head to the polls to make a final decision, she's ahead by just one point.
Fox News polling from last week shows the race tied.
Democrat Kyrsten Sinema and Republican Martha McSally tie at 46 percent apiece among Arizona likely voters. Sinema was up by two points in early October and by three in September.
Both Sinema (88 percent) and McSally supporters (88 percent) have a high degree of vote certainty, and equal numbers of Democrats (50 percent) and Republicans (50 percent) are extremely interested in the election.
Ninety-three percent of Democrats back Sinema, while 85 percent of Republicans support McSally. More Arizona voters identify as Republican than as Democrat by 10 points.
Five percent are still undecided about their vote in the Senate race.
The RealClearPolitics average has Sinema with the advantage by one point.