I don't mean a monopoly in the literal sense of the word, I guess. :( It's more of a mutual monopoly? Lmao I'm making up terms here, I know, but atm, voting independent is basically pointless unless enough people do it. Most people won't because they want their vote to count so they pick one of the 2 main parties, effectively giving them (together) a monopoly on politics. If that makes sense.
I... think. D: I'm not entirely sure how your political parties work.
But I'm pretty sure monopoly can be used in that sense? o_O; I know it often is when describing the communications industry here in Canada because there are only like 3 main companies that provide that sort of thing here and they've got a legal monopoly on the industry because of it and consumers end up suffering because they get away with so much. v_v