Thinking out loud really.

  • squaresinger@lemmy.world
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    4 months ago

    Resetting the senate into proportional representation isn’t enough. It will still not fix the two-party issue. You’d need a senate that’s fully proportional, not just a bunch of first-to-the-post races.

    It needs to be setup in a way that if 5% of all voters across the whole US vote for party X, then party X should have 5% of the seats in the senate, regardless of whether that party won a single state or not.

    The problem right now is that the first-to-the-post system punishes vote splitting.

    Say there’s three parties on an imaginary spectrum (purposely avoiding the labels left and right here). The spectrum goes fro 0 to 1, with 0 and 1 being extreme positions. Party A is at 0.2, Party B is at 0.6 and Party C is at 0.9.

    Party B and C are very popular, party A is tiny.

    Our imaginary voter is at 0.1 of that spectrum. So they would really like Party A to win. They don’t really want party B to win, but they would absolutely hate it if party C wins.

    But if they vote for A, that vote is lost because A has no chance of winning, thus their vote for A causes and advantage for C to win, compared to the voter voting for B.

    In fact, if 60% of the voters split their votes equally among A and B, and the rest votes for C, C will win, even though a majority would be against this.


    Germany has a quite good system. They have first-to-the-post direct mandates to make sure there’s direct representation of constituencies. And then there’s a pool of list mandates that are filled on-demand to make up for the difference between the direct mandates and the national proportional vote.

    That would mean if our hypothetical party won 5% of the votes but no state, they would have no direct mandates in the senate but would get enough list mandates so that 5% of all seats would be filled with their representatives.

    This would allow coalitions which in turn increase voter choice, representation and compromise.