2020Final resultsSpecial election

2020 special election for U.S. Senate in Arizona

Name: 2020 special election for U.S. Senate in Arizona
Start: 2020-11-03
Location: Arizona

U.S. Senate · Arizona

Mark Kelly (D) won with 51.2% of the vote, defeating Martha McSally (R) by 2.3 points.

Mark KellyDemocrat · winner

51.2%1,716,467

48.8%1,637,661

3,354,128 votes

Source: MIT Election Data and Science LabUpdated Oct 1, 2026, 10:09 AM ET

Money in this race

Each line compares the two campaigns on one scale.

Mark KellyMartha McSally

$101.1M

Raised by the campaign

$73.6M

$99.7M

Spent by the campaign

$74.4M

$1.4M

Cash on hand

$115.3K

Campaign money: FEC, through Dec 31, 2020.

Source: FEC campaign filingsUpdated Dec 31, 2020