A better system might be Multiple Winner First Past The Post

Multiple Winner First Past The Post would provide the required fluidity and diversity of winning candidates that is denied by typical FPtP systems. The problem with FPtP which denies proportionality is that there is only one winner, typically. This creates a problem because, since only one candidate can win, we might choose to vote for a popular candidate to keep another out, not the one that we genuinely like. It is a problem caused by the restriction placed on other parties gaining the ascendancy; the gap is too narrow. With Multiple Winner FPtP we would have the ability to make sure the outcome better reflects the voting wishes of the electorate.