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Article snippet: WASHINGTON — The campaign ad appeared during the presidential contest of 2008. Rapid-fire images of belching smokestacks and melting ice sheets were followed by a soothing narrator who praised a candidate who had stood up to President George W. Bush and “sounded the alarm on global warming.” It was not made for a Democrat, but for Senator John McCain, who had just secured the Republican nomination. It is difficult to reconcile the Republican Party of 2008 with the party of 2017, whose leader, President Trump, has called global warming a hoax, reversed environmental policies that Mr. McCain advocated on his run for the White House, and this past week announced that he would take the nation out of the Paris climate accord, which was to bind the globe in an effort to halt the planet’s warming. The Republican Party’s fast journey from debating how to combat human-caused climate change to arguing that it does not exist is a story of big political money, Democratic hubris in the Obama years and a partisan chasm that grew over nine years like a crack in the Antarctic shelf, favoring extreme positions and uncompromising rhetoric over cooperation and conciliation. “Most Republicans still do not regard climate change as a hoax,” said Whit Ayres, a Republican strategist who worked for Senator Marco Rubio’s presidential campaign. “But the entire climate change debate has now been caught up in the broader polarization of American politics.” “In some ways,” he added, “it’s bec... Link to the full article to read more