Sources close to both Biden's presidential campaign and the McCains said that at some point during the White House race, McCain's widow Cindy, 64, and daughter Meghan, 34, a host on "The View," will offer their public support in the hope of removing Trump from office in 2020.

https://www.washingtonexaminer.com/news/mccain-family-to-support-biden-in-2020-race-in-bid-to-defeat-trump