Any climate change deniers (right-wing or not, though in my experience it just seems to be a right-wing thing) honestly will keep denying it until their homes are flooded, their cars are floating on the water, and half their furniture has been blown to China.
I'm still mad that all that Conservative propaganda about the carbon levy increasing grocery bills (despite studies showing it barely does) caused the end of the carbon tax rebate. That was free money every year for low income people who mostly take transit or in my case, just walk all the time.
They honestly don't see how close we are now to reaching the point of no return where a dangerous chain reaction of heat causes other changes that lead to more heat, leading to more global changes that lead to more heat... I just hope all these deniers own ocean-front property when things really get worse.