Former Arizona Sen. Jeff Flake. Photo: Chip Somodevilla/Getty Images

Former Republican Sen. Jeff Flake, along with more than two dozen former GOP members of Congress, signed onto a "Republicans for Biden" effort, Fox News reports.

Why it matters: The group is part of the Biden campaign's strategy to appeal to moderate Republicans currently on the fence about backing President Trump.

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  • "[T]hey know what’s at stake in this election and that Trump’s failures as president have superseded partisanship."

Go deeper

Trump says Republicans have an "obligation" to fill Ginsburg's seat

President Trump. Photo: Stephen Maturen/Getty Images

President Trump wrote in a tweet Saturday morning that Republicans have an "obligation" to fill Justice Ruth Bader Ginsburg's seat on the Supreme Court following her death Friday.

What he's saying: "We were put in this position of power and importance to make decisions for the people who so proudly elected us, the most important of which has long been considered to be the selection of United States Supreme Court Justices," the president said, tagging the Republican Party. "We have this obligation, without delay!"

Cruz: Reversal on election-year SCOTUS picks is "not just simply your party, my party"

Sen. Ted Cruz (R-Texas) argued on ABC's "This Week" Sunday that Republicans should vote on President Trump's nominee to fill Justice Ruth Bader Ginsburg's seat on the Supreme Court, calling it a "question of checks and balances."

The backdrop: Republicans stonewalled President Obama's nomination of Merrick Garland following Justice Antonin Scalia's death in 2016, claiming that voters should decide in the election who is appointed to the court. Cruz said the circumstances are different now because Republicans control the Senate and the White House, whereas Democrats were in the minority when former President Obama nominated Garland.

A court fight for the ages

The flag flies at half-staff as people mourn on the Supreme Court steps last night. Photo: Tasos Katopodis/Getty Images

Ruth Bader Ginsburg — feminist icon, legal giant, toast of pop culture — left this statement with granddaughter Clara Spera as cancer closed in: "My most fervent wish is that I will not be replaced until a new president is installed."

The big picture: For all that the nation owes "Notorious RBG" — the hip-hop-inspired nickname she enjoyed and embraced — Republicans are planning to do their best to be sure her robe is quickly filled, despite that last wish, with her ideological polar opposite.