Invariably they pick the candidate least likely to win and heap all kinds of praise on them, it has the intended effect of marginalizing the more popular candidates.
The GOP used this kind of triangulation ploy when they funneled money to Jill Stein and the Green Party in 2016.
I frankly don't care that Donald Trump thinks that "Sleepy Joe" Biden will be his eventual foe or that his son Junior likes Marianne Williamson better than the other folks running for office. They don't need to give Democrats and liberals their personal tout sheets on the field. It's patronizing, gratuitous, utterly self serving and not remotely believable.
If we want your opinion we will ask for it.
Nixon to Reagan to Trump...
The Nixon Presidential Library, motivated apparently by the work of its former director, has released a tape of then-California Gov. Ronald Reagan ranting about African delegates, whom he called “monkeys,” in a racist phone call to President Richard Nixon.
“To see those, those monkeys from those African countries—damn them, they’re still uncomfortable wearing shoes!” Reagan said, to laughter from Nixon.