If you didn't back a winner in the Cup today, there's always tonight, with the lotto draw that stops the nation.

$100 million is up for grabs and across Sydney everyone's looking for the winning edge, even divine intervention.

Two monks were happy to be swept up in lotto fever at Canley Heights today, blessing a newsagency but stopping short of joining the ticket queue.

But plenty of punters did, with one in two Australian adults snapping up a ticket.

Today's longest lines were in Sydney's luckiest suburbs; Campbelltown sold the most winning tickets for lotto, followed by Penrith, Cabramatta and the CBD.

Over eight million Australians have bought a ticket.

"There is a possibility that with such interest it could grow beyond 100 million dollars," Elissa Lewis from New South Wales Lotteries said.