vote vs voting slip

vote

noun
  • an act or instance of participating in such a choice, e.g., by submitting a ballot 

  • a formalized choice on legally relevant measures such as employment or appointment to office or a proceeding about a legal dispute. 

  • any judgment of intellect leading not only to a formal opinion but also to a particular choice in a legally relevant measure, a point of view as published 

verb
  • to cast a vote; to assert a formalized choice in an election 

  • to choose or grant by means of a vote, or by general consent 

voting slip

noun
  • a piece of paper with a list of the candidates at an election (sometimes with an indication of the candidate's party); the voter puts an X in the corresponding place against the candidate of his choice, folds the slip and places it in a ballot box provided. 

How often have the words vote and voting slip occurred in a corpus of books? (source: Google Ngram Viewer )