Donald Trump Joe Biden Kamala Harris Trump's Influence Candidate Support Trump's Endorsements Candidate Profiles Trump Endorsement Biden Endorses Harris Impact on Candidates Delegate Support Trump's Endorsement Biden's Support for Harris Democratic Party Biden-Harris Campaign Gavin Newsom Grassroots Mobilization Robert F. Kennedy Jr. Super PACs Hillary Clinton's Endorsement of Kamala Harris Michelle Obama Candidate Performance Robert F. Kennedy Campaign Dynamics RFK's Potential Endorsement of Trump Arizona Police Association Liz Cheney Impact of Endorsements Union Involvement Bipartisan Support Business Leaders for Harris Influence of Celebrities Donald Trump's Endorsement Christine Serrano Glassner Candidate Alliances Voter Engagement Funding Candidate Endorsements Republican Endorsements for Democrats Influence of Social Media Trump's Influence on Robinson's Campaign Criticism Trump's Support for Begich Trump Influence Cuomo's Endorsements EMILY's List Obama's Influence on Harris Fundraising Nikki Haley Republican Party Dynamics Political Endorsements County Party Endorsements Candidate Endorsements in Philadelphia 2026 Gubernatorial Campaign Trump's America First Agenda Liz Cheney's Endorsement Candidate Selection Impact on Future Elections Biden's Endorsement Voter Mobilization Biden's Endorsement of Harris Election Outcomes Quid Pro Quo Joe Biden Endorses Harris Voter Perception Haley's Support for Trump Philadelphia Democratic Party Media Coverage UAW Endorsement United Auto Workers