> ~33% of the population is far from a invisible class

For a variety of reasons, homeowners vote. Outside New York City, which unsurprisingly has solid tenant protections, American renters do not.

However, they are a class that is relatively easy to disenfranchise. In fact many already are since minorities who live in cities are far more likely to rent than the average suburban or rural voter and we already have plenty of systems in place to disenfranchise them.

> they are a class that is relatively easy to disenfranchise

Correct. Dated, but related and a classic: "We find that neither demographic nor attitudinal attributes explain [people who have recently moved's] lower turnout. Instead, the requirement that citizens must register anew after each change in residence constitutes the key stumbling block in the trip to the polls. Since nearly one-third of the nation moves every two years, moving has a large impact on national turnout rates."

The authors suggested "linking the maintenance of registration to an action that is usually an intrinsic part of moving" such as the "change-of-address notice at a local post office." Interestingly, "holding elections on Sunday, making election day a holiday, or extending the hours that the polls are open...are designed to facilitate people who are registered" and would thus "do little to improve turnout."

https://www.cambridge.org/core/journals/american-political-s...