Staggering–towards a typology

Offered as a public service, in response to a comment from JD, who observed:

To my knowledge, the following countries have partial renewal besides the US: Chile, Argentina, Czech Rep., France (indirect, of course).

I remember someone offering a detailed terminology for different types of staggered election. Does someone recall which thread that was?

I don’t think said terminology was offered here (or at least not by me), but it is an obvious F&V topic. So, let’s give it a try.

I plant this under “bicameralism” because, at least at the national level, the topic mainly concerns second chambers. However, it should be noted that Argentina continues to have staggered terms for its first chamber. At one time, so did Luxembourg, although they abandoned it decades ago.

By definition, staggering means that some members of a legislative chamber are elected at different times* than other members of the same chamber, generating “classes” of members according to when their seats are next up for election. It has entered the discussion due to the observation (by, for instance, my UC Davis colleague Ben Highton in February) that this year’s class of US Senate seats was especially unrepresentative of the partisan breakdown of the country as a whole.

Any typology of staggering would consider variables such as whether districts alternated in which were in play across elections or whether some fraction of each district’s seats came up at every election. I am sure there are other variables…

Please note the M-dash in the title of the post, as the meaning rather changes if it is omitted.

* Or for different term lengths, although as far as I know this variable is relevant only for a new chamber, or when the staggered schedule is being reset (as after a double dissolution in Australia.)