“It’s a flat-out lie,” Mr. Dennison said in an interview after the debate, adding that he had based his view on the preaching of Rush Limbaugh and the teaching of Scripture. “I read my Bible,” Mr. Dennison said. “He made this earth for us to utilize.”

Skepticism and outright denial of global warming are among the articles of faith of the Tea Party movement, here in Indiana and across the country. For some, it is a matter of religious conviction; for others, it is driven by distrust of those they call the elites. And for others still, efforts to address climate change are seen as a conspiracy to impose world government and a sweeping redistribution of wealth. But all are wary of the Obama administration’s plans to regulate carbon dioxide, a ubiquitous gas, which will require the expansion of government authority into nearly every corner of the economy.

“This so-called climate science is just ridiculous,” said Kelly Khuri, founder of the Clark County Tea Party Patriots. “I think it’s all cyclical.”

“Carbon regulation, cap and trade, it’s all just a money-control avenue,” Ms. Khuri added. “Some people say I’m extreme, but they said the John Birch Society was extreme, too.”

Whatever the party composition of the next Congress, cap and trade is likely dead for the foreseeable future. If dozens of new Republican climate skeptics are swept into Congress, the prospects for assertive federal action to control global warming gases, including regulation by the Environmental Protection Agency, will grow dimmer than they already are.