1º_ It is said of the activity beyond the slogan or alignment of a political party, but always related to it. See extra-partisanship. 2º_ It is a way of calling extreme militancy, the closure of ignoring or despising everything outside the political party itself. See prefix ultra- .
ULTRAPARTIDISM ideology that exacerbates the politicization of society giving every activity a confrontational political connotation between various antagonistic ideologies. Everything is decided from an ideologically beneficial arlier than pragmatic perspective, to the extreme that it is sufficient that something is detrimental to adversaries to be beneficial to the other side.