But his more moderate stance on immigration and his deciding vote previous year against Trump's efforts to repeal President Barack Obama's health care law turned off many GOP voters.
John Fund is a columnist for National Review.
The GOP total came to nearly 35 percent of what Trump won in Florida in 2016.
-Arizona: Andres Cano appears to have squeaked to victory in the Democratic primary for the state house district that includes parts of Pima.
Earlier this year, she removed her name from a bill she had co-sponsored that offered a path to citizenship for so-called "Dreamers", young illegal immigrants who arrived in the United States as children.
On Monday, Ward tweeted, "Political correctness is like a cancer!"More news: Transfer: Yaya Toure's new club, salary, debut match revealed
Arpaio, a former six-term sheriff of Maricopa County who'd never lost a GOP primary, was in third place.
During the primary Trump didn't endorse a candidate, but had previously praised Ward and issued a pardon for Arpaio, who was convicted of criminal contempt.
McSally, a fighter pilot turned congresswoman in the McCain mold, is hoping Ward and Arpaio split Arizona's anti-establishment vote.
The Florida contest came on the last big day of state nominating contests before the November 6 elections, when Democrats will try to pick up 23 seats in the U.S. House of Representatives and two seats in the Senate to gain majorities and slam the brakes on Trump's legislative agenda.
"She's the biggest flip-flopper in history", Arpaio said of McSally in a recent interview.
That has led McSally's very Trumpian opponents - former state Sen.More news: Asian Games: Unified Korea boating team win historic gold
That's a message that may play well among a general electorate in West Virginia, where Trump won by more than 40 percentage points in 2016, but Trump carried Florida by only a single percentage point. He's the Democrats' highest-performing statewide candidate of the last 12 years, having nearly won his 2014 race for state superintendent. In the Democratic primary, former HHS Secretary Donna Shalala faces tough challenges from State Rep. David Richardson and Michael Hepburn, a former academic adviser at the University of Miami.
Polls have shown a close race.
Rep. McSally has long opposed marriage equality and consistently supported discriminatory, anti-LGBTQ policies and proposals while in Congress, including an amendment that would allow discrimination against LGBTQ people by taxpayer-funded organizations.
Without wasting much time, Flake replied to Trump on Twitter, saying his claim about an attempted endorsement was false.
The Democratic gubernatorial field is the most crowded since 1978, the year Bob Graham eventually won the governor's race. They recruited former U.S. Rep. Gwen Graham, the daughter of a popular former governor and U.S. senator, who had won support from business in the past.
"It's hard to celebrate anything this week as we mourn the loss of Senator McCain", McSally said at her victory party in Tempe. "It's gotten out of hand".More news: Downers Grove girl, Drake's 'little best friend,' gets a new heart
In Oklahoma, where term-limited Republican Mary Fallin is America's least popular governor, Republicans on Tuesday nominated Tulsa businessman and political newcomer Kevin Stitt over Oklahoma City Mayor Mick Cornett.