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what is the latest POD available to make US promote a multiparty system where several parties (4+) have seats in both houses
Demands
* Can't be solved by having two giants and a multitude of state-dependent parties (Minnesota Farmer-Labor party)
* Can't be carried through by blatant Garrymandering
Requests
* No garrymandering at all, making electoral districts follow country borders and make them much less likely to shift
* Tradition (even if only within the last 50'ish years) for having coalition cabinet