Good. None of these agreements should exist. I should have a meaningful choice in every election, whether it be in a D+30 Congressional seat, Attorney General, or the most local of local elections. All these agreements do is stop me from having a choice in elections, forcing me to vote for a Democrat, write someone in, or not vote in that all.
The cross-endorsing of judicial candidates in New York is the worst example of it.
It's patronage for lawyers. Of course, "Supreme Court" judges in NY are just local judges, a step up from County Court Judges; it's NY's Court of Appeals that's the big deal, and I believe they are appointed.