Interesting article in CRIKEY that refers to extensive polls taken that demonstrates the denialists are being seriously marginalised.
CRIKEY:
While hardcore denialists don't shift their views and tend to explain away even record heat events -- a Bureau of Meteorology conspiracy etc -- "undecided" people are swayed by extreme weather. This has been established in polling for a number of years: not merely does direct experience of extreme weather affect people's views about the existence of anthropogenic climate change, non-aligned voters are likely to express concern about climate change in response to warm weather.