2004President George Bush (R-TX) / Vice President Dick Cheney (R-WY) ✓
Senator John Kerry (D-MA) / Senator John Edwards (D-NC)
2008Senator John McCain (R-AZ) / Governor Sarah Palin (R-AK)
Senator Hillary Clinton (D-NY) / Senator Evan Bayh (D-IN) ✓
2012President Hillary Clinton (D-NY) / Vice President Evan Bayh (D-IN) ✓
Fmr. Governor Mitt Romney (R-MA) / Congressman Paul Ryan (R-WI)
2016Secretary of Labor Barack Obama (D-IL) / Senator Tim Kaine (D-VA) ✓
Senator Marco Rubio (R-FL) / Senator John Cornyn (R-TX)
2020President Barack Obama (D-IL) / Vice President Tim Kaine (D-VA)
Senator Josh Hawley (R-MO) / Fmr. Governor Nikki Haley (R-SC) ✓
The biggest impact of this on American politics is the 2006 elections and the 2008 primaries. The public only turns against the War in Afghanistan during the Great Recession, so the progressive and populist movements take a little longer to develop. Preventing Iraq doesn't save the Bush era GOP- the religious right had no appeal with young people and the Great Recession would turn the country inward and away from the neocons' agenda. Iraq is probably taken out by a CIA color revolution in the late 2000s instead, or the Arab Spring at the latest.