sweep the board vs walk off with

sweep the board

verb
  • To win all the prizes in a competition. 

  • To get enough votes in an election to gain all the seats. 

  • To take all of the cards. 

walk off with

verb
  • To win, as in a contest and especially without significant effort. 

  • To make the strongest favorable impression in a theatrical or similar performance, in comparison to other performers. 

  • To steal, especially by surreptitiously removing an unguarded item. 

How often have the words sweep the board and walk off with occurred in a corpus of books? (source: Google Ngram Viewer )