Of living people, Clinton is actually second to Gore for most lifetime electoral votes, for obvious reasons.
Gore, Al: 1015
Clinton, Bill: 749
Biden, Joe: 697
Obama, Barack: 697
Quayle, Dan: 594
Bush, George W.: 557
Cheney, Dick: 557
Dole, Bob: 400
Mondale, Walter: 359
Carter, Jimmy: 346
Pence, Mike: 305
Trump, Donald: 304
Lieberman, Joe: 266
Edwards, John: 253
Kerry, John: 251
Kaine, Tim: 227
Clinton, Hillary: 227
Romney, Mitt: 206
Ryan, Paul: 206
Palin, Sarah: 173
Dukakis, Michael: 112
Powell, Colin: 3
Warren, Elizabeth: 2
Cantwell, Maria: 1
Collins, Susan: 1
Fiorina, Carly: 1
Kasich, John: 1
LaDuke, Winona: 1
Paul, Ron: 1
Sanders, Bernie: 1
Spotted Eagle, Faith: 1
Imagine Gore won both 2000 and reelection in 2004. He might be the number 2 or 3 in American history after FDR (2013 electoral votes from 1920, 1932, 1936, 1940 and 1944) and Nixon (1939 electoral votes from 1952, 1956, 1960, 1968 and 1972).
Joe Biden could overtake Gore if he wins next year and even further should he become a two-termer.