in contention vs undecided

in contention

prep
  • Used other than figuratively or idiomatically: see in, contention. 

  • Contending for a title or championship. 

undecided

noun
  • A voter etc. who has not yet come to a decision. 

adj
  • Uncommitted, not having reached a decision. 

  • Open and not yet settled or determined. 

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