"Preserving the institution of the Senate should be paramount to any political gain," Flake tweeted.
A new New York Times/Sienna College poll shows incumbent GOP Senators in three states at risk of losing in the November 3 election.
Biden's lead over Trump has gained 1 point since a similar poll was conducted in March by Monmouth University.
Health care ranks as the fourth top issue among voters in the Sun Belt, following the economy, criminal justice and the coronavirus pandemic.
Democratic Senate candidate Mark Kelly also leads GOP Senator Martha McSally by a significant margin in the southwestern state.
"My brother's year in space was really hard on him and we tried to bring some light to his difficult ordeal, but this comment does not do that and I apologize and deeply regret it," Kelly said.
In order to take control of the Senate, Democrats would need to maintain all their current seats while gaining four more in the upcoming election.
Over the past few days, the National Weather Service in Los Angeles issued warnings to residents of extremely high temperatures during the upcoming weekend.
At least 957 positive cases among students as well as 26 among faculty and staff have been reported, the university confirmed.
Several states, including California, Arizona and Georgia, have seen new infections decline in recent weeks.
Democratic presidential candidate Joe Biden was shown as leading President Donald Trump in three swing states that Trump won during the 2016 presidential election.
Fliers from the far-right group Folks Front were previously found at ASU last November.
Phoenix, Arizona experienced its 50th day this year with high temperatures at or exceeding 110 degrees on Friday, smashing the previous record, which saw 33 such days during the whole of 2011.
The Democratic nominee appears to have the advantage in Arizona, Florida, Michigan, North Carolina, Pennsylvania and Wisconsin.
Prisoners and a correctional officer claim that prison administrators encouraged inmates to threaten one another.
Arizona students on Monday, held a rally, urging the J.O. Combs School District to hold in-person classes, after 109 members of the teaching staff held a "sick-out" rally in opposition of the school reopening.
According to a statement from Superintendent Gregory Wyman, the district received an "overwhelming response" from staff saying they didn't feel it was safe to return to classrooms with students.
The man's son carried him toward the store's exit after an argument over the store's mask policy begins to escalate.
Arizona was reported to have 22,180 child COVID-19 cases as of August 6, according to a new study.
The death tolls in Texas and Arizona are projected to reach 27,435 and 6,840, respectively, by December 1.
Arizona's Maricopa County has seen a large increase in deaths in June and July, county officials confirmed.
President Donald Trump supported Arizona Governor Doug Ducey's encouragement of mail-in voting among Arizonans but Trump said counting mail-in ballots in Nevada would be "a catastrophe waiting to happen."
Officials confirm that 517 of the 1,066 inmates at Tuscan facility have tested positive for the virus.
Senator McSally is expected to defeat challenger Daniel McCarthy during Tuesday's primary.
An Arizona superintendent said his decision between opening schools safely or risking the loss of funding is like having a gun to his head.
The incident comes months after a pregnant 19-year-old woman fell while trying to climb the border wall near El Paso, Texas.
The woman who videotaped herself pulling face masks off a Scottsdale Target store's display rack earlier this month discussed the behavior in comments to USA Today on Thursday.
The Real Clear Politics averages of state polls show Trump trailing Biden in Arizona, Florida, Michigan, North Carolina, Pennsylvania and Wisconsin.