No it isn't. Evidence will show that the case never should've been brought because you can't criminalize political-conduct.
I was thinking more in the lines of the political fallout with the voters, notwithstanding your observation about polling, which is largely meaningless at this stage. Trump's polling may have gone up, but the Dems and their lawfare is intended to have the impact of "death by 1,000 cuts" and we haven't begun to see the impact of said lawfare - and won't until early next year.
Powell is most-likely innocent, but was grossly overcharged. The minute she requested a speedy trial, the prosecutors targeted her for a plea-deal.
Overcharging is SOP for the feebs. No surprise there. Sling everything against the wall to see what'll stick.
More than anything, I see Powell's self-preservation instinct kicking in as she puts the Kraken back into its cage.