With Harris gaining in the polls, a look at how the electoral map has changed

As the two newly-cemented tickets continue to make their case to voters, the recent shake-ups in the race have led to a reshuffling of the electoral math to win. The Cook Political Report is out with updated ratings for the presidential race, moving the three battleground states of Arizona, Georgia and Nevada from lean Republican to toss-up. Amna Nawaz discussed the latest with Amy Walter.

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