I say yes but it seems to be a rare occurrence. But when it does happen I respect that person far more than the rigid right-wing ideologues.
I think so .Mitt Romany believes the world is getting warmer and humans contribute to it.He was still able to win republican partys presidential nomination <iframe width="420" height="315" src="http://www.youtube.com/embed/3G598Xno5qU" frameborder="0" allowfullscreen></iframe>
Maybe he should be called Flip Romney. "Our ruling In June 2011, Romney said he believed "the world is getting warmer" and that "humans contribute to that." In October 2011, by contrast, Romney said that "we donât know whatâs causing climate change on this planet." Itâs unclear to us whether this was an inadvertent omission or a calculated attempt to say divergent things to different audiences. Because Romney, in our view, is savvy enough to know the difference between suggesting a human role in climate change and leaving it out, we think itâs reasonable to perceive Romney as taking two distinct stances in these two statements. We rate this a Half Flip." http://www.politifact.com/truth-o-m...mney-and-whether-humans-are-causing-climate/:)
Denying AGW is not a Republican vs. Democratic thing. It is about people with common sense who can read data vs. the sheep who continuously bleat the AGW alarmist nonsense.