Kamala Harris Comparative Analysis Debate Performance Donald Trump Polling Polls Polling Data J. D. Vance Political Figures JD Vance Polling Trends Voter Perception Polling Averages Impact on Elections Celebrities in Politics Polling Methodology Post-Debate Ratings Impact on Campaigns Poll Results Voter Sentiment Trump Trump's Favorability Rating Registered Voters Presidential Favorability Historical Trends Young Voters Political Criticism Undecided Voters Candidate Comparison Voter Support Independents Trump-Vance Agenda Vice Presidential Candidates