Support for such an increase was also highest, at 70% of respondents. This suggests a winning formula for politicians - push for increases in energy efficiency and renewable energy research, and you'll have 70% of the public behind you!
The poll was conducted February 18-25 with a nationwide sample of 1,182 American adults. The detailed questions and response levels are available here - the main focus of the study appears to have been national security and defense issues, rather than energy or environmental concerns. A more detailed report on the study is also available.