10. John McCain (2000, 2008)
John McCain’s presidential campaigns in 2000 and 2008 were marked by his “straight talk” approach, challenging Republican Party orthodoxy and advocating for campaign finance reform. In 2000, he gained national attention with his independent stance and criticism of the party establishment, though he ultimately lost the nomination to George W. Bush. In 2008, McCain secured the Republican nomination but was defeated by Barack Obama in the general election. Despite these losses, his campaigns set a precedent for ideological independence within the party (britannica.com).
