Sorry you’re getting so much hate and harassment. Everyone may not agree with it, but they shouldn’t just dismiss you as without ideas when you talk about exerting leverage by withholding your vote. If I’m not mistaken that’s exactly how the status quo of parties has changed in the past in the US - when one implodes, a new on takes over the vacuum.

In many ways it makes more sense than thinking that giving Dems a mandate would cause them to change their direction. If they start taking off in the polls, their consultants would likely tell them to double down on what they are currently doing.