General Discussion
In reply to the discussion: Hillary's electability is largely political myth at this point [View all]muriel_volestrangler
(106,736 posts)but big leads were enough even for the Dems.
Average of polls Jan-Jun year before primaries (ie what we're in the middle of now):
Republicans (when not an incumbent):
http://fivethirtyeight.blogs.nytimes.com/2011/03/31/a-brief-history-of-primary-polling-part-i/?_r=0
1980: Reagan +11.8% over Ford
1988: Bush +15.2% over Dole
1996: Dole +38.9% over Gramm
2000: Bush 27.9% over Dole (Elizabeth)
2008: McCain -11.7% 2nd behind Giuliani - the time it doesn't predict the Republican winner.
Article written before 2012, but I suggest from this graph Romney had a lead of about +10 over Gingrich
Democrats:
http://fivethirtyeight.blogs.nytimes.com/2011/04/04/a-brief-history-of-primary-polling-part-ii/
1972: McGovern -24.3% 5th behind Muskie , who led Humphrey by 10%
1976: Carter -18.7% 12th behind George Wallace (!) who led Humphrey by 4.4%
1984: Mondale +11.2% over Glenn
1988: Dukakis -5.7% behind Hart who led Jackson by 0.1%
1992: Clinton -19% 12th behind Cuomo who led Gore by 11%
2000: Gore +33.1% over Bradley
2004: Kerry -5.9% 2nd behind Lieberman (!)
2008: Obama -15% 2nd behind Clinton
So, the nearest thing to Hillary's current lead of about +50 was 2000 - Gore leading by 33. He won the primary comfortably (and he was a member of the incumbent administration who had lost to them in the primary 8 years earlier, despite having a lead over them about a year before the primaries; pretty similar to Hillary). All other Dem leads were 15% or under (and the one that was 15% went to the wire). In the Republicans, Giuliani blew a 12% lead over McCain; all other early leaders won.