US vote: 'change, global warming' top campaign buzzwords?

The Hindu News Update Service

"Change is the topmost concern. Both candidates- Republican John McCain and Democrat Barack Obama - are benefiting from the mantra; however Obama holds a 3:2 edge over McCain in this regard," the GLM said.

The second-most discussed term of the campaign is the combination of 'climate change' and 'global warming'," it said.