All election ads and promotional activities are small side stories in the scope of the overall campaign (and his family heard all the other crap said about him too!). Fact remains that the time Trump's lawyer paid off Stormy Daniels was years after the event but weeks before an election, and Cohen has already pleaded guilty to it being a campaign finance violation. In the scope of campaign finance violations it doesn't sound like a particularly massive one and the reasons for not wanting to declare it are obvious and unlikely to be related to any sort of wider conspiracy, but it stretches credulity to imagine that the election wasn't a consideration.

If the prosecution says "Here are all the things that indicate intent" and the defense says "I'm not going to respond to any of those, because none of them prove intent" then that's rolling some pretty loaded dice with a jury.