McSally also compared her own political style to the president, saying in her announcement video, "Like our president, I'm exhausted of PC politicians and their BS excuses". "I recently made one myself, and I wanted my friends in Tucson to be the first to know".
On Tuesday, Arpaio announced his candidacy for the Senate seat now held by Jeff Flake (R-Az), a vocal Trump critic who will not be seeking re-election.
She faces a GOP field that consists of former state Sen.
She wore a flight suit, her uniform from her days as the country's first female combat pilot, and she spoke about her record of fighting the Department of Defense over the clothes women in the military were forced to wear in restrictive countries practicing Sharia law.
Rep. Martha McSally (R-Ariz.) announced Friday that she is running for the Senate, jumping into a contest that could feature one of the year's most divisive and consequential Republican primaries and test President Trump's loyalties. "That's why I told Washington Republicans to grow a pair of ovaries and get the job done".
Ms. McSally, Arizona Republican, now represents Arizona's second congressional district, which stretches from Tucson to part of the U.S. -Mexico border.
Trump famously fueled the birther movement for years, and while he held a press conference in September 2016 to declare "President Obama was born in the United States", he revived the conspiracy theory behind closed doors, according to a New York Times report in November.
"I absolutely refused to bow down to sharia law", she says.
Like McCain and Flake in recent campaigns, McSally probably will have to run to the right in the primary and, if she prevails, pivot toward the political center for what most observers expect would be a tough general-election campaign against U.S. Rep. Kyrsten Sinema, the well-funded front-runner in the Democratic Senate primary.
She added, "After taking on terrorists in combat, the liberals in the Senate won't scare me one bit".
A general-election victory by McSally, Ward or Sinema would send Arizona's first woman US senator to Washington.
Yet backed by a cult-like nationwide following, Arpaio could be a major factor.
The three-way primary race pits McSally, the favorite of the traditional GOP establishment, against Arpaio and Kelli Ward, a former state senator, both of whom will be battling to win the party's conservative base. "They really embrace him".