Elections July 19, 2024 11:55 am What is an open convention? This rare process occurs when there is no pre-determined nominee for a political party. US & World Videos 1:02 Hurricane Milton strengthens to Category 5 again 1:12 Hurricane Milton makes landfall in Mexico en route to Florida 0:41 Biden pledges federal support to Florida ‘before, during and after' Hurricane Milton 2:07 WATCH: Florida Aquarium moves feathered residents to higher ground 0:58 NASA astronaut shares remarkable view of Hurricane Milton from space