Why is Harris on the attack?

Why is Harris on the attack? Trump's more popular at this point in this campaign than at this point in either his 2016 or 2020 bids.

Harris's popularity rise, on the other hand, has crested, and she's fallen back (barely) into net negative favorability territory. pic.twitter.com/2hddgwc8Zq

— (((Harry Enten))) (@ForecasterEnten) October 18, 2024