Washington July 13, 2023 Mitch McConnell and other leading Republicans have a spring in their step. Despite the summer heat. Rumours of a McConnell smile were doing the rounds. The wellspring of this holiday joy is polls showing that 20% of Democrats prefer Robert F Kennedy Jr over Joe Biden. Republican leaders believe that if a large rump of the college educated liberal elite prefer a vaccine sceptic who argues that chemicals cause gender dysphoria over Joe Biden, then Donald…