Re: Elections 2012.2 - Congressional and Gubernatorial
FS23, you are losing third party pull. Off my head I can think of Clinton and Ross, George Wallace, and John Anderson (in you 80 Reagan example).
Better graph would be 2nd place popular vote total and winners electoral college.
How about disparity between Popular Vote % and Electoral Vote %?
1940 - Electoral Vote - 70% (85%-15%) Popular Vote - 10% (55%-45%)
1944 - Electoral Vote - 62% (81%-19%) Popular Vote - 7% (53%-46%)
1948 - Electoral Vote - 21% (57%-36%) Popular Vote - 5% (50%-45%)
1952 - Electoral Vote - 66% (83%-17%) Popular Vote - 11% (55%-44%)
1956 - Electoral Vote - 72% (86%-14%) Popular Vote - 15% (57%-42%)
1960 - Electoral Vote - 16% (57%-41%) Popular Vote - 0.2% (49.7%-49.5%)
1964 - Electoral Vote - 80% (90%-10%) Popular Vote - 22% (61%-39%)
1968 - Electoral Vote - 20% (56%-36%) Popular Vote - 0.7% (43.4%-42.7%)
1972 - Electoral Vote - 94% (97%-03%) Popular Vote - 23% (61%-38%)
1976 - Electoral Vote - 10% (55%-45%) Popular Vote - 2% (50%-48%)
1980 - Electoral Vote - 82% (91%-09%) Popular Vote - 10% (51%-41%)
1984 - Electoral Vote - 96% (98%-02%) Popular Vote - 18% (59%-41%)
1988 - Electoral Vote - 58% (79%-21%) Popular Vote - 7% (53%-46%)
1992 - Electoral Vote - 38% (69%-31%) Popular Vote - 5% (43%-38%)
1996 - Electoral Vote - 40% (70%-30%) Popular Vote - 8% (49%-41%)
2000 - Electoral Vote - 02% (51%-49%) Popular Vote - (-0.5) (47.9%-48.4%)
2004 - Electoral Vote - 06% (53%-47%) Popular Vote - 3% (51%-48%)
2008 - Electoral Vote - 36% (68%-32%) Popular Vote - 7% (53%-46%)
2012 - Electoral Vote - 24% (62%-38%) Popular Vote - 3% (51%-48%)
Over the last 19 elections (no particular reason for starting in 1940, other than that's where I decided to start), the average Electoral College Victory was by 47%. The average Popular Vote Victory was by 7.86%. In other words, roughly, a 1% popular vote victory should equate to a 6% Electoral College victory. Comparing the 2004 and 2012 elections, Bush underperformed in the Electoral College, while Obama slightly over-performed. It still makes no sense to judge the closeness of an election by the Electoral Vote.
To put it a different way, (on average) had Romney done 1.5% better (thus Obama 1.5% worse), Romney would have won Virginia, Ohio, and Florida, but still have lost 272-266. Romney needed to basically take away about 2.4% of Obama's Vote (on average) to win the election (would have been a 275-263 victory). This means that had Romney increased his Popular Vote #s by 2.3% (up to 50.3%) and Obama would have dropped 2.3% (down to 48.2%), Romney would have won the popular vote by 2.1%, but still have lost the election 272-266. Basically, as of the 2012 election, the Electoral College is slanted towards the Democrats. As a result, a small Democratic Victory in the popular vote will translate into a larger than normal victory in the Electoral College.