Betting markets show a shift towards Vice President Kamala Harris as the favored Democratic nominee for the presidential election, with a growing pushback against President Joe Biden's candidacy. Democratic lawmakers, including Rep. Adam Schiff, have raised doubts about Biden's electability, boosting support for Harris. Meanwhile, the Republican Party remains united behind former President Donald Trump and his running mate J.D. Vance, with a focus on key battleground states like Pennsylvania, Michigan, and Wisconsin. The selection of Vance as Trump's running mate has incited strong reactions from both the left and the right, emphasizing the division in political sentiments.