I believe every state legislator should have the right and the ability to vote the way his or her constituency want him to vote. There should be zero restriction. The only caucus should be defined by the political party they represent. The one their constituents knew about when they voted. Any agreement to vote a certain way depending on how the rest of the caucus votes opens the door to coercion and chills the ability of a legislator to vote the way his or her constituents want or the way their conscience dictates.