I will laugh at this after the 2018 Democrat wave when Nelson wins by double digits.
A wave is literally metaphysically impossible in 2018
Untrue. What you're trying to get at is that there are very few pickup opportunities for Democrats in this Senate map, which is not the same thing as "there can't be a wave." A wave would simply mean few if any Senate gains and a lot of gains elsewhere, but Dems sweeping the Senate races in MT, IN, MO, NV, AZ, ND, FL, OH, PA, VA, WV, WI, MN, and MI would still be an impressive feat, and perfectly possible. In such a case Nelson probably does win by double digits