Cindy McCain. Photo: Ralph Freso/Getty Images)

Cindy McCain formally endorsed Joe Biden for president on Tuesday, calling the former Vice President the only "candidate in this race who stands up for our values as a nation."

Why it matters: McCain, the widow of the late Arizona Sen. John McCain, appeared in a video presentation at last month's Democratic National Convention praising Biden, with whom her husband had a longtime bipartisan friendship. With an official endorsement, she will join a number of prominent people in Republican circles to endorse the Democratic candidate over Trump.

  • Biden earlier Tuesday told reporters President Trump's alleged comments about service members, reported in The Atlantic earlier this month, played a role in her decision to endorse him.

What she's saying: "My husband John lived by a code: country first. We are Republicans, yes, but Americans foremost. There's only one candidate in this race who stands up for our values as a nation, and that is @JoeBiden," McCain tweeted.

  • "Joe and I don't always agree on the issues, and I know he and John certainly had some passionate arguments, but he is a good and honest man. He will lead us with dignity," she wrote in another tweet.
  • She continued: "He will be a commander in chief that the finest fighting force in the history of the world can depend on, because he knows what it is like to send a child off to fight."
  • Biden responded in a tweet, writing: "Cindy — I'm deeply honored to have your support and your friendship. This election is bigger than any one political party. It requires all of us to come together as one America to restore the soul of the nation. Together, we'll get it done."

Go deeper: The top Republicans who aren't voting for Trump in 2020

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Oct 20, 2020 - Politics & Policy

USA Today breaks tradition by endorsing Joe Biden

Photo illustration: Aïda Amer/Axios. Photo: Win McNamee/Getty Images

USA Today, one of the largest newspapers by circulation in America, gave Joe Biden its first-ever presidential endorsement on Tuesday.

The big picture: A slew of media companies are endorsing a candidate this year for the first time ever, citing the unprecedented nature of this election.

Updated Oct 20, 2020 - Politics & Policy

Microphones will be muted during parts of Thursday's presidential debate

Photos: Jim Watson and Saul Loeb/AFP via Getty Images

The Commission on Presidential Debates adopted new measures on Monday to mute the microphones of President Trump and Joe Biden to allow each candidate two minutes of uninterrupted time per segment during Thursday night's debate.

Why it matters: During September's chaotic debate, Trump interrupted Biden 71 times, while Biden interrupted Trump 22 times.

Trump campaign announces $55 million ad buy in final two weeks

President Trump holds up a MAGA hat in Des Moines, Iowa on Oct. 14. Photo: Alex Edelman/AFP via Getty Images

The Trump campaign and Republican National Committee plan to spend an additional $55 million on coordinated ad buys in the remaining two weeks of the 2020 election, campaign manager Bill Stepien told reporters on a Monday call.

What to watch: The campaign and the RNC will jointly target Arizona, Iowa, Wisconsin, North Carolina, and Michigan — all considered critical swing states. RNC chair Ronna McDaniel told reporters on a Monday call that one ad would target Joe Biden's health care plan.