Harris Ad Says Second Trump Term Would Be 'Unhinged, Unstable'; New CNN Poll Of Polls: Race Virtually Tied With 18 Days To Go; AdImpact: Dems Outspent GOP Ads By $921M To $569M Since July; Campaigns Spend Millions To Lure Battleground State Voters. Aired 12:30-1p ET

(COMMERCIAL BREAK) [12:30:40] DANA BASH, CNN ANCHOR: There are 18 days to go until the election. Nearly 10 million Americans have already cast their ballots, and the universe of persuadable [...]