Why is Reddit far more “left-wing” than real life?

Coming from a center left person.

Check out r/Idaho, r/NorthDakota, or r/Oklahoma and sort by top this past year.

Most of the top posts are political – pro Democrat/Harris or anti Republican/Trump. Any remotely positive Trump/Republican comments are down voted to hell.

Yet, in all 3 of these states Trump won by OVER 65%, and Republicans won every single house seat. It wasn’t even close.

How is this possible to this extreme? Is it reddit demographics? Bots/manipulation? Other factors?