rain or shine vs shoo-in

rain or shine

adv
  • Regardless of what the circumstances are, and how the weather is. 

shoo-in

noun
  • The winner of a fixed race, a fixed race. 

  • A candidate or contestant generally agreed upon as the presumptive winner; somebody who is well-liked or widely agreed upon. 

How often have the words rain or shine and shoo-in occurred in a corpus of books? (source: Google Ngram Viewer )