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That sort of consensus has been largely absent during Mr. Obama’sterm, though Mr. Warner has opposed some liberal stimulus initiatives initiated by Mr. Obama, including “clunkers for cash,” saying there should be more reliance on free markets to revive the economy.

Mr. Gingrich thinks Mr. Romney understands that, foreign policy aside, rebuilding the American economy, its manufacturing sector and education system, while also improving domestic energy production and the nation’s finances, are collectively the key to the United States “remaining the leading power in the world.”