Crossword clues for the word: NDP The word NDP has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for NDP Showing 1 to 5 of 5 results Clue(s) ALEXA MCDONOUGH'S GROUP Former Speaker of the House's monogram Layton's party Sask-born political party Sen. Ben Nelson's org.