That's how democracy works. If you can convince enough people in your area to vote for your preferred candidate, you're happy. If not, then not.

Every one of these representatives is there because they got the majority of votes.

Taking this idea to its most extreme expression, we would end up saying that a minority persecuted by a democraticrally-elected government is to blame for its own persecution, as it failed to convince others to vote against ethnic cleansing.