cleveland/washington republican presidential candidate donald trump call climate change hoax vow let regulation stand way expand u.s. oil drill elect group supporters republican national convention cleveland week lobby soften stance youth religious investor activists align republican party work sideline july 18-22 conclave argue green platform could help new york businessman-turned-politician win voters november age republicans particularly interest win presidency support agenda reflect americans recognize climate change problem say rachel lamb national organizer young evangelicals climate action group lamb representatives organizations like great cleveland young republicans environmental advocacy group republicen clean energy foundation clearpath take part panel discussions hold private meet operatives sideline convention trump formally nominate tuesday compete nov. presidential election presumptive democratic nominee hillary clinton make combat climate change key theme campaign republican party adopt platform call coal clean source electricity would open federal land drill mine trump say would reverse president barack obama key climate change initiatives 64 percent u.s. adults say worry great deal fair amount global warm high read since 2008 accord result gallup poll release march cade marsh representative college republican national committee say hop convince republicans cleveland week environmentalism conservatism mutually exclusive climate change word see far leave marsh say repackage clean energy term national security liberty find people much receptive say refer role renewable energy source like wind power solar power reduce dependence foreign oil say message warmly receive convention attendees hold little hope turnaround trump policies tomorrow republican party marsh say jay faison north carolina republican donor found clearpath foundation say tell republican operatives cleveland week would prefer fund candidates put clean energy party agenda wonder opportunities persuadable voters middle term general election say green republicans resist trump 's climate denial cleveland