I mean... are you suggesting that some system where someone could get elected with only 25% of the vote would somehow be more democratic? If a party or candidate can only get 25% of the vote in an election for a single position, like mayor, they aren't going to get elected, that's just democracy, right?

RCV makes it more likely a third party could get 50% of the vote though, since people can vote for it without worrying about "throwing their vote away", or throwing the election to a right-wing party when they want to vote for the lesser left-wing party.