A while ago, some asshole with a blog noted that the Democratic Party is actually a coalition:
The Democratic Party consists of two parties.
One is what used to be called liberal Democrats and is the Sanders-Warren wing of the party (I would include Sen. Sherrod Brown as a more moderate member of this wing). The other is what used to be called liberal Republicans, and is the Klobuchar-Bloomberg-Biden wing of the party. It’s worth realizing these are parties and not ‘wings’, since there is quite a bit of diversity within in each wing.
The key point, however, is that, if the Republican Party were not a cesspool of Christian white nationalist theocrats, recidivist segregationists, and batshitloonitarian Ayn Randian libertarians, what is the functional equivalent of two political parties would not have to be amalgamated into one party.
Will Bunch argues that, for Biden to gain support from progressives, he should name personnel such as cabinet members, not just his vice president pick, now (boldface mine):
The other Biden problem was dramatized by the freak-out over the unsourced Axios story that he might staff his administration with Wall Street hacks: Young voters under 30 simply don’t trust him. At the start of 2020, Biden was polling in the low single digits with this youngest cohort; he’s improved slightly during his recent comeback, but Sanders’ huge lead with that generation speaks to concern that Biden is a status-quo candidate on pressing issues such as climate change and student debt. In 2016, enough young voters defected to the Green Party’s Jill Stein to, arguably, tip the Electoral College to Trump.
The simple fix? Biden shouldn’t wait until December — when we might be out in the streets wondering how the hell Trump won by 78,000 votes again — or even until the Democratic convention in Milwaukee in early July, when the party needs to be more unified than it is now, to reveal some of the key players in his administration. The emphasis ought to be not just on competence — reminding voters that the grown-ups will be in charge after four years of Trump — but also to show young people that even if Biden isn’t a card-carrying leftist, his presidency would still be the most progressive one in modern U.S. history….
Sanders and Warren both deserve enormous credit for pushing the Democratic Party leftward toward positive social change, yet — given the growing inevitability of a Biden nomination — these two should look to play the hand that 2020 fate has dealt them. They should leverage the huge power of a pre-Milwaukee Biden endorsement to get iron-clad commitments not just for progressive policies but the right people in the right jobs.
This is the kind haggling in parliamentary systems that occurs when trying to form a coalition government: we’ll give you ministry X and Y in exchange for your support. Might as well be explicit about it.
All right we are two parties.