With less than 50 days to the 2024 U.S. presidential election and the polls revealing a tight race, renewable energy leaders are stepping up to support vice-president Kamala Harris’ prospects by hosting donor events, financing advertising campaigns, and warning of the dangers another Trump presidency poses to the sector. Last month, the Environmental Defense Fund along with two other climate groups--the League of Conservation Voters and Climate Power--launched a $55mn advertising campaign backing Harris in swing states. “There…