Queensland, New South Wales, Victoria, Tasmania, South Australia and Western Australia all have one driver each.
New Zealand will be represented by four drivers, including reigning champion Sam Thornley who steered top Kiwi pacer Tact McLeod to victory in the final heat of the championships at Menangle in December.
“Last year all my drives were sort of near enough chances, but I needed luck,” Thornley said.
“And then on the last night, I had Tact McLeod, which was pretty much a certainty, so it would have been a bad drive if that one got beat.
“It sort of all just worked out – I got the points during the heats for places, picked up a couple wins which I didn't really expect, but it was really good.
“New Zealand racing's a lot different because we have a lot more horses in the field with bigger distances.
"Here they are shorter races, and they go the whole way, so you've got to be handy, and got to have the right horse as well.”