The NFL MVP voting system consists of 50 media members, as selected by the associated press, choosing a first-fifth place vote for MVP (with different points given based on their ranking 10/5/3/2/1). So there are 50 total first place votes possible to give.

This question asks only how many different players will receive a 1st Place vote (which could not necessarily be the player than has the most points and wins the MVP).

https://www.espn.com/nfl/story/_/id/35626954/chiefs-qb-patrick-mahomes-wins-2nd-career-nfl-mvp-award

This question resolved based on the votes last year would result in the answer "3", (Mahomes had 48, Hurts had 1, Allen had 1).

Feel free to add a higher number than 8 if you want.