Then we're choosing the lesser of five evils, except now, none of the evil parties alone have a strong enough electorate to squash any sixth party that emerges

Then we're choosing the lesser of five evils, except now, none of the evil parties alone have a strong enough electorate to squash any sixth party that emerges from the disenfranchised of the other five. That's completely unlike the current two-party system, where no third party can gain any traction due to not having a sizable enough electorate to take on "the big kids".