Nope. Read the Constitution. The word democracy doesn't exist any form. Originally the closet it got to direct voting via democracy is a district within a state direct voting for House members. Otherwise the original intent was-
POTUS - Electoral College.
SCOTUS - Picked by POTUS, confirmed by Senate.
House - Direct voting by people living within a district inside a state.
Senate - Originally picked by State Legislator until it was switched to Direct Voting like House.