The oldest conservative is Thomas at 70
Trump may get another nomination in his first term, two or three more in a second term
The two aging liberals will hold on as long as possible, but at their age nothing is guaranteed
Furthermore, conservatives like Thomas might retire during Trump's second term just to give him another nomination and to make sure the seat doesn't swing. That's the reason I think Kennedy resigned when he did, just in case the democrats take the Senate (which is not happening, but there has been larger upsets)
Trump may get another nomination in his first term, two or three more in a second term
The two aging liberals will hold on as long as possible, but at their age nothing is guaranteed
Furthermore, conservatives like Thomas might retire during Trump's second term just to give him another nomination and to make sure the seat doesn't swing. That's the reason I think Kennedy resigned when he did, just in case the democrats take the Senate (which is not happening, but there has been larger upsets)