In northern and western states, fusion was largely banned by Republican-led legislatures. One Republican Minnesota state legislator said: “We don’t propose to allow the Democrats to make allies of the Populists, Prohibitionists, or any other party, and get up combination tickets against us. We can whip them single-handed, but don’t intend to fight all creation.”[12] In southern states, fusion was largely banned by Democrats who supported Jim Crow, in an attempt to prevent political alliances between newly-enfranchised Black voters and poor white farmers.[1
Um…there is a mention-
That might have been true 50 years ago, but the most recent bans were after 2000. That is clearly not the reasoning anymore.