(the) smart money is on (someone or something)
Something is likely to happen or someone is likely to succeed; it would be wise to bet on or invest money in someone or something. Smart money is on a win by the home team in this game. Trust me, the smart money is on Jill. She always finds a way to come out on top.
the smart money is on something
If you say that the smart money is on a particular event happening, you mean that thing is likely to happen. The smart money is on Labour winning at the next election. Note: You can also say the smart money says something, with the same meaning. The smart money says that Jarvis is likely to succeed him as manager.
the ˈsmart money is on somebody/something
if the smart money is on somebody or something, people with intelligence or knowledge think somebody will succeed or something will happen: This year, the smart money is on Roe to win the tournament.