But not by much. Gallup:
Democrats and Republicans retain markedly different views about global warming, with 75% of Democrats versus 40% of Republicans saying they personally worry about it a “great deal” or “fair amount.” Both groups’ levels of concern about global warming have fluctuated in recent years. Republicans — as well as independents, at 59% — show slightly increased levels of worry in 2013, following 10-year lows in 2010 and 2011. Concern has held steady at a high level among Democrats throughout the past decade.
The full poll here.