Yep. Trump's only way of actually staying out of prison at this point isn't winning in an actual courtroom. It's delaying the trials for as long as he possibly can and then winning the general election.
So polls that show he's unlikely to be able to do so are indeed bad news for him.
Luckily for us, that can't keep him out of Georgia prison. He can only pardon himself of federal charges. Granted I don't think he has a chance in a general election. The Republican party is so screwed up they keep picking more and more extreme candidates even though those candidates usually lose in the general.
It shouldn't be the case but it's not unlikely that I'd he was already president, he would not be imprisoned while serving.
Impeachment is meant to be the way to remove him of that were the case but we've already seen that impeachment is now only a political tool for bashing your opponent when one party will exonerate trump from repurcuasions when clearly found guilty.
If he is president, he'd likely stay out of prison until he serves his term. At his age and health, he'd likely be dead by the end. When you're facing prison at his age, postponing it for 6 years is as good as getting off.
When you get to the second question, "Do you believe that Donald Trump is guilty of the alleged crimes in the federal 2020 election subversion election case?" and 14% of Republicans think he is guilty. If they are unwilling to vote for Trump, that's potentially an election flusher.
While popular vote doesn't win elections (Hillary pulled 2.1% more of the popular vote than Trump in 2016), it can shift the electoral college votes in states, turning red states (potentially) to blue.
In the 2020 election, Trump won North Carolina (15 electoral college votes), Trump got 2,758,775 votes, Biden 2,684,292. If 14% of the republicans abstained from voting in 2020, Trump would have received about 2,372,547 votes, losing the state to Biden rather than winning it.
Yes, Trump lost to Biden anyway in 2020, but Republicans that won't vote for Trump, nor a Democrat, just won't vote. And voters not voting can shift Electoral College votes in states.