Young voters outnumber baby boomers and could hold key to NSW election

People under the age of 40 will have a big say in who wins the NSW election. (Bridget Murphy & Helena Burke)

It is almost 20 years since the federal government introduced the baby bonus, a cash payment designed to encourage people to have more children. 

Then-treasurer Peter Costello famously exhorted couples to have "one for your husband, one for the wife and one for your country."