alternatehistory.com

1993-2001: John McCain (Republican)
1992 def - Edward Kennedy (Democrat), Lyndon LaRouche (Independent)
1996 def - Joe Biden (Democrat), Lyndon LaRouche (American Labor)
2001-2009: Edward M. Kennedy Jr. (Democrat)
2000 def - George W. Bush (Republican)
2004 def - Mitt Romney (Republican)
2009-2017: Marco Rubio (Republican)
2008 def - Al Gore (Democrat)
2012 def - John Kerry (Democrat)
2017-20---: Mark Cuban (Democrat)
2016 def - Cindy McCain (Republian)

I tried to do a list where a LaRouche candidacy in 1992 leads to LaRoucheist ideas taking over the Democrats in 2016 and not Perotism taking over the Republicans (though I envision the POD being as far back as a Reagan win in 1976)... not really very happy with the results because I don't know enough about American politics. Cuban doesn't necessarily work for an economically populist socially conservative democrat, for example...