pork barrel vs stakes

pork barrel

noun
  • A ready supply of income; one's livelihood. 

  • State funds as assigned for local or regional expenditure; especially, central money used for regional projects which are eyecatching or designed to appeal to voters. 

stakes

noun
  • The money wagered in gambling 

  • Risks 

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