Greens luring Labor more to left: PM

Malcolm Turnbull says the Greens are pulling Labor increasingly to the left like a magnet.

"They're two peas in a pod - it's just that one's more left than the other," the prime minister told Alan Jones on radio 2GB on Wednesday.

But he's vowed that while the Greens were luring Labor to the left, the coalition would preference the minor party behind Labor in all electorates.