The Democrat Party has been so diminished in recent years — and about to get much worse for them — that a convention of the states would not appear to bode well for the Left.
At least, until that moment that the majority Republican State Legislatures decide to bend over backwards for the leftists. You know, because "bipartisanship".
The right has a habit of snatching defeat from the jaws of victory. It's what they do best. Once more, be careful what you wish for.