What will there be?

I'm sorry, but this is one point where the founding fathers let their idealism exceed their realism. For one thing, our freedoms include most especially the freedom of conscience and the freedom of association. For another, there will always arise points of severe division (e.g., abortion). It is inevitable that "parties" will arise to embody either an issue or an ideological combination of issues.

My union had no "parties" and long suffered under a dictatorial underling. Everyone was resigned to their fate. But when I jumped into the situation, I realized we needed to have party politics to organize and give voice to the resistance. And so we began, with a party label ("Dedicated Unionists") and a publication for the distribution of propaganda. The "establishment" were like a deer in the headlghts. They had never seen the like. Instead of lobbying the cronies of the union council, we ignored the hundred-odd members in the council and concentrated on the thousands of rank-and-file members. The establishment fought back with lies and innuendo. We countered with access to union tax and income documents that had been held secret from the membership. It went back and forth for 5 years and cost several thousand dollars, but it did culminate in firing the tyrant under circumstances where there would be no comeback (the members said they would join a decertification campaign if that was attempted). To me, it was all a small-scale experiment in proving that corruption could be expelled. Partisanship is how political change is made (MAGA!).

Hoping that there will be no "parties" is like hoping there will be no thumbs.