OPINION | In interview, host leaves Dean's comments on Trump unchallenged
Chelsea said her mom "certainly looks healthier at her age than I feel at 36 at this moment."
"The America I know wasn't on the television screen on Monday night."
Clinton leads Trump, 41 percent to 38 percent.
OPINION | Stein forced to watch the debate from outside, calls for change
Sen. Dianne Feinstein and Rep. Adam Schiff last week released a statement accusing Russia of trying to influence the election.
"Hillary will be a president our kids can look up to," Obama says in the ad.
"Notice Trump sniffling all the time. Coke user?" Dean tweeted Monday night.
It's the first time The Arizona Republic has supported a Democrat for president.
Warner will make the announcement at an event Wednesday with Clinton's running mate.