Arizona Rep. Martha McSally Martha Elizabeth McSallyTumultuous court battle upends fight for Senate Grassley, Ernst pledge to 'evaluate' Trump's Supreme Court nominee The Hill's Campaign Report: Biden goes on offense MORE (R) performed the national anthem at Arizona State University's homecoming football game on Saturday, just days before the state's Senate race.

McSally, who is facing fellow Rep. Kyrsten Sinema (D) for the seat being vacated by Sen. Jeff Flake Jeffrey (Jeff) Lane FlakeJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Republican former Michigan governor says he's voting for Biden Maybe they just don't like cowboys: The president is successful, some just don't like his style MORE (R), appeared Saturday before thousands of cheering ASU football fans and performed the national anthem while wearing a T-shirt bearing the logo of the Pat Tillman Foundation, a nonprofit serving military veterans and their spouses.

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"Thrilled and honored to be able to sing the National Anthem before ⁦@ASU⁩’s homecoming game. Congrats on the win!" she tweeted Saturday.

Thrilled and honored to be able to sing the National Anthem before ⁦@ASU⁩’s homecoming game. Congrats on the win! pic.twitter.com/O5iD8qS27b — Martha McSally (@RepMcSally) November 3, 2018

Sinema also appeared at the game, where she performed the pre-game coin toss.

"Great to be back home at @ASU to cheer on @asufootball! I was honored to join Alex Lofgren, a veteran, #sundevil, and member of our Veterans Advisory Council, on the field before kickoff. #forkem," Sinema tweeted.

Great to be back home at @ASU to cheer on @asufootball! I was honored to join Alex Lofgren, a veteran, #sundevil, and member of our Veterans Advisory Council, on the field before kickoff. #forkem pic.twitter.com/FfB8ECHS1A — Kyrsten Sinema (@RepSinema) November 4, 2018

Democrats see the tight race as a possible pickup as the party attempts to retake the Senate, where Democrats face a two-seat deficit, in Tuesday's elections.

RealClearPolitics's average of polls shows Sinema leading McSally by less than a percentage point, while an ABC 15 poll of the race this week instead found McSally with a 7-point lead.

Sinema also received a boost this week when a Green Party candidate running in the race dropped out and endorsed the Democratic nominee.