The Penn State star is one of only two safeties named to the list.
The odds-on favorite to win NFL Defensive Rookie of the Year continues to widen the gap with strong performances for America's Team.
The three candidates hold comfortable leads as remaining mail-in ballots are set to be counted on Wednesday.
Nanes ran unopposed on this year's ballot. He defeated fellow Democrat Jim Leous by nearly a two-thirds margin in May's primary election.
"I just learned so much about Centre County history. I thought I knew a good deal, but I learned how much I don't know."
Penn State might be a truly good team, but it's hard to ignore what happened Homecoming weekend.