During the 56 nomination years, 193 authors have had works nominated, and 42 of these have won (including co-authors and ties). Ursula K. Le Guin has received the most Nebula Awards for Best Novel, with four wins out of six nominations. Joe Haldeman has received the next most: three awards out of four nominations, while nine other authors have each won twice. Jack McDevitt has the most nominations at twelve (with one win), while Poul Anderson and Philip K. Dick tie for having the most nominations without winning an award, at five a piece.