We've seen Democrats successfully Do The Thing before but where they usually get hung up is feeling that The Thing is not working right away so they stop doing it when what you need to do is continue talking about until everyone is sick of hearing about it.
They usually stop when they are sick of talking about it, which is well, well short of "everyone is sick of hearing about it." Keep going. Don't shut up about it until people on the street are automatically filling in the next three words when you say "convicted..."
A way you'll be able to tell this is working by the way is that someone like Brett Stephens or Jon Chait will write a column like "I'm worried that Joe Biden doesn't seem to have a message beyond saying 'convicted felon Donald Trump' over and over." That means you're drawing blood. Keep going!
Convicted fraud, drop the -ster. Fraudster is an older term, less commonly used today, with a hint of being less serious or even humorous with the slight anachronism and informality. Saying e.g. "that guy's a fraud" is how you emphasize it plainly with disgust, an insult, with unambiguous contempt.
They don't mean the same thing tho. A "fraud" is colloquially someone who lies about being better than they are; not the same as pointing out smn literally committed fraud.
AFAIK the point of these exercises is to find words that aren't parsed as just "he's bad" but bring the actual reasons to mind.
