Hundreds of thousands of ballots need to be tabulated in Maricopa County. This map shows current results for the Senate race at the precinct level.

Kyrsten Sinema and Martha McSally face off for U.S. Senate seat

Pamela Ren Larson | The Republic | azcentral.com

The Republic

Arizona's Senate race may take days to decide, as Democrat Kyrsten Sinema and Republican Martha McSally are in a tight race.

The vote count has swung from McSally leading late on Election Day, to Sinema in front by a 20,000-vote margin late Friday afternoon.

But more than 360,000 ballots remain to be counted statewide, and 266,000 of those are in Maricopa County.

This map shows precinct by precinct the percentage-point lead for each candidate in Maricopa County.

Using the most current precinct-level data, from Thursday night, the margin is counted by the percentage of votes one candidate has over the other.

As the remaining ballots come in, the numbers and margins will shift. The map will continue to be updated as precinct-level results are available.

Scroll over to see the margin in each precinct.

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Across Maricopa, 407 precincts show Sinema in the lead, while 331 have more votes for McSally.

And 204 precincts currently have less than a 10 percent margin for either candidate.

Based on Thursday night's data, Sinema leads by at least 40 percentage points across 110 contiguous precincts — in the central Valley, stretching from Tolleson in the west, to Glendale and Peoria, and as far east as Mesa and Chandler.

McSally leads by at least 20 percentage points in 111 precincts.

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Sinema, meanwhile, has a 20 percentage point lead in 228 precincts.

Arizona Republic

The highest margin for Sinema is 82.1 percentage points in the Guadalupe Precinct, south of Baseline Road and east of Interstate 17, where she currently has 89.5 percent of the vote.

McSally’s largest margin is in rural far-west Maricopa County's Salome precinct, where she had 74.7 percent of the vote and leads by 53.2 percentage points over Sinema.

The strongest support for McSally is in north Scottsdale, Carefree, Apache Junction, parts of Mesa and the West Valley to Wickenburg, where she leads by more than 20 percentage points.