The primary election on Tuesday was the end of a months-long campaign season to fill the seat for U.S. Sen.
Trump's post-midnight tweet came after Rep. Martha McSally (R-Ariz.) was declared the victor in a hard-fought GOP primary to replace Flake, a frequent Trump critic who decided not to seek reelection this year amid lackluster polling numbers. The commercial contrasts imagery of McSally in uniform with footage of Sinema protesting against the Iraq war in a pink tutu.
Dr Hilal Tipirneni, an Indian-American Democrat who sailed through her primary for a Congressional district unopposed, told The Straits Times: "The base is very energised". Jeff Flake (R), who announced in 2017 his decision to not seek reelection.
Meanwhile, GOP's McSally, who has represented the state in the U.S. House since 2015, defeated former state Sen.
In a statement acknowledging her primary win, Sinema made no mention of her opponent. "It's up to all of us to follow his lead of always putting country over party".
All three Republicans had distanced themselves from McCain, who frequently feuded with Trump, and Ward suggested that his family's announcement on Friday that he was stopping medical treatment was timed to hurt her campaign. "How did you guys like those side-by-side outfits?" she said, drawing laughs.
A Cornett victory Tuesday would be a big win for business-minded Republicans who believe a more moderate message can still prevail - and likely squelch Democratic hopes for November. "It's a choice between a doer and a talker ... between a patriot and a protestor", McSally wrote on Twitter after her win Tuesday night.
At the House level in the Sunshine State, primary challengers to three Democratic incumbents - all freshmen - fell short. Rep.
Voters there and in Florida were heading to the polls to pick candidates for November 6, when Democrats will try to pick up 23 seats in the US House of Representatives and two seats in the Senate to gain majorities and slam the brakes on Trump's legislative agenda.
Schapira did too, a fact that speaks to what has been one of the most significant challenges in the Democratic primary race: distinguishing one candidate from the other.
The late August primary leaves 10 weeks before the general election.
Sinema's competition was mainly pro forma. While her centrist approach and Blue Dog Democrat status may not appeal to the state's voters who are far to the left, her willingness to be bipartisan could curry favor among the state's large crop of independent voters. With a consistently conservative voting record, Arizonans elected McCain to the Senate six times, including in 2016.
Arpaio, one of Trump's staunchest supporters, received a presidential pardon after he was convicted of contempt for refusing to obey a court order to stop racially profiling Latinos.
McSally is seen as a stronger general election candidate than either Ward or Arpaio, both hard-line conservatives.
McSally calls suggestions that she's changed on Trump - whom she criticized while running for re-election during 2016 in a district that voted for Hillary Clinton - "a false narrative".
The conventional wisdom, with which I don't quarrel, is that McSally gives the GOP a much better chance of holding the Arizona seat than her main rival, Kelli Ward, would have. After McCain's death, Sinema and Ward suspended their campaigns for Wednesday and Thursday.