Senator JD Vance, recently announced as Donald Trump's vice-presidential pick, has faced backlash and awkward reactions for a joke about Diet Mountain Dew at a campaign rally, highlighting the campaign's challenges in gaining broader appeal. Former GOP adviser Mark McKinnon criticized Vance's joke as 'cringe' and suggested that the Trump campaign might be reconsidering their choice due to Vance's limited appeal beyond the MAGA base. Despite the controversy, Vance has been actively campaigning, emphasizing his roots and economic plans in hometown rallies and upcoming events, including a joint appearance with Trump in Minnesota. President Biden's recent decision not to seek reelection has positioned Vice President Kamala Harris as the presumptive Democratic nominee, complicating the GOP's strategy. Harris's campaign has already gained significant momentum, breaking fundraising records and securing key endorsements.