2015 Federal Election

[plam]

I can imagine ways to have such a Senate, and there's got to be some countries where it's the case. But I don't know of any.

It is, however, consistent with Justin Trudeau booting all of the Senate Liberals from being Liberals though.

House of Lords is kind of like that.  I know, hereditary lords and all that, but generally they are not partisan.

Hereditary lords have mostly or completely been disenfranchised now. It's all life peers. But yes, the "crossbench peers" are especially non-partisan. There's a House of Lords Appointments Commission.