Jeff Flake joins "Republicans for Biden" group

• Its Monday launch was timed to coincide with the first day of the Republican National Convention.
• Four Republicans, including former Ohio Gov. John Kasich, backed Joe Biden during the opening night of the Democratic National Convention last week.

The big picture: Flake has long been a Trump critic and the president was a major factor in his not to run for re-election in 2018.

• He urged Republicans not to vote for Trump last year, saying "you cannot go elsewhere for a soul."

What they're saying: "These former members of Congress cited Trump’s corruption, destruction of democracy, blatant disregard for moral decency, and urgent need to get the country back on course as a reason why they support Biden," a Biden campaign official told Fox News.

• "[T]hey know what’s at stake in this election and that Trump’s failures as president have superseded partisanship."