Next up - Stephen Breyer. He's 82 and will most likely be replaced during Trump's second term. Then it will be 7-2 (unless you count John Roberts as a leftwing activist, which I do, so it'll really be 6-3).
We need to do something about the House and that Socialist majority. If it were up to me I'd declare the Democrat Party a domestic terrorist org and strap them all to the chair.