In the US where the parties cling to stupid and outdated viewpoints and agendas in order to differentiate themselves from the other party. Legislators have to

In the US where the parties cling to stupid and outdated viewpoints and agendas in order to differentiate themselves from the other party. Legislators have to vote with the party if they don't want to find the party funding an opponent in the next election cycle. This is an improvement insofar as it allows legislators to nominally vote with the party while voting more strongly in favor of things they actually care about. This would probably work well in two party states because it would allow lawmakers to vote as weakly as possible for stupid things just to say they're towing the party line while not actually voting strongly for them. In single party states this is probably a bad thing because it gives the people who ran as the other party just to get their name on the ticket to only weakly vote the way their platform says they should be voting. If this system were used outside of the legislature (i.e. to actually elect legislator) it would probably be a total shitshow because as other commenters have mentioned it rewards coordination which basically just favors the status quo. If there's anything we need it's less status quo in general elections. So yeah, this might work in a legislature but I don't see it working well to elect the actual politicians themselves.