Phillip, I, too, have had problems with how you've handled this question. It seems like you decided to limit the question in a way not specifically spelled out by the author, AND simultaneously you are using that limitation as justification to further limit (by deletion) answers. While I can understand your viewpoint (e.g. since the OP said Democrats as well as "united in opposition" he must have meant Politicians), I can also see that the viewpoint of abelenky is just as valid (e.g. HE, personally, is a Democrat). What this all sums up to me to equal, is a perceived misuse of diamond privileges.
Perhaps I have not been a part of this particular Exchange long enough, but I have not seen any other HNQ's with this same sort of limitation added. (It was, in fact, an HNQ that brought me here in the first place.)
Background, or where I'm coming from here...
I am a fairly high rep user in Travel.SE and we are having somewhat the same issue there right now. A newly elected diamond (mod) has started unilaterally closing/deleting answers, etc, when that is not the status quo. I know that having the diamond gives you a personal disadvantage in that you cannot participate in normal queue activity, since any vote by you (as a diamond) makes the vote 'stick', but this (all of SE) is supposed to be a community, where moderation is done by votes of the community. When a diamond makes their singular vote count as equivalent to the voices of several regular users (through normal queue operations and voting), there comes to be a sort of an unwritten vote of no-confidence, as it were. In Travel it has cost us at least one very well respected professional who left SE altogether.