Instead of attacking Trump, why not campaign on the good stuff offered by the Democrat candidates and stand on their merits? Also problematic in that their good stuff is the false promise of nanny government providing for everyone. A bigger whopper that any that Trump tells. Truth is not what anyone, left or right, wants.
With their destroy Trump focus the Democrat primary candisdates are focused upon destroying each other. A crappy plan. The left needs to find a more effective way to sell it’s lie. A hard road ahead.