Hillary is like a slow leaking tank of water. She's always screwing it up because a lot of her issues are things that are legal, but look horrible. The Clinton Foundation (all legal), the email scandal (all legal), Benghazi (legal), etc. But all of these things seem to have legs in that they don't die off and they're making her slowly bleed out this election.
Trump is like a tank of water that has occasional catastrophic failures. When he screws up, he does so royally, loudly, and messily. He bottoms out and then some idiot goes and refills the tank expecting a different result next time.
Analogies aside: Trump has a high floor and low ceiling in the polls. Hillary the opposite. She could potenitally just keep losing support until she loses by a large margin while Trump seems to wildly careen between two extremes nearly daily. It's going to get interesting.
