So, I got to wondering…what’s the pretty much worst-case scenario that might happen for Obama? I decided to crunch some numbers; now that I did it, I might as well post them. I decided on this thread, although I suppose one of the others might be more appropriate. Oh, well. Information mostly taken from RealClearPolitics Upcoming States and DemConWatch Ultimate Summary. My math is below, but here’s the executive summary:[ul]
[li]Using worst case polling, the remaining primaries will give Clinton 150 delegates and Obama 67. [/li][li]Without MI and FL, Clinton needs 177.5 (69.5%) of the remaining 255.5 supers, while Obama needs 99 (38.7%).[/li][li]With MI and FL, in the worst case, Clinton needs 168.5 (58.2%) of the remaining 289.5 supers, while Obama needs 209 (72.2%).[/li][/ul]
I doubt very sincerely that it will work out this way, and again, these numbers are all worst case (i.e., worst polling data, all of PR for Clinton, and neither MI nor FL suffer any penalty). But it was rather instructive, showing that Obama takes quite a hit if things really go Clinton’s way. He’s not out of it even so, but contrary to the talking heads (and my desires), it’s not quite over yet. 
So, if anyone cares to check my work, here’s the explanation and math:
Bullet point 1: Remaining primary estimates, matching worst-case-for-Obama polling, using the formula:
(50% + (point difference / 2)) * delegates to allot = # Clinton delegates
WV: (0.5 + (+0.43 / 2)) * 28 = 20.02 Clinton (8 Obama)
KY: (0.5 + (+0.36 / 2)) * 51 = 34.68 Clinton (16 Obama)
OR: (0.5 + (-0.06 / 2)) * 52 = 24.44 Clinton (28 Obama)
Since RealClearPolitics doesn’t have polling data for PR, MT, and SD, I chose: PR goes 100% for Clinton, MT and SD split:
PR: 55 Clinton (0 Obama)
MT: 8 Clinton (8 Obama)
SD: 8 Clinton (7 Obama)
Total delegates from remaining primaries for Clinton: 150
Total delegates from remaining primaries for Obama: 67
Bullet point 2: Leaving out FL and MI (i.e., need 2025.5 delegates to clinch), we get:
Total w/o uncommitted supers for Clinton: 1697+150 = 1847
Total w/o uncommitted supers for Obama: 1859.5+67 = 1926.5
Due to the 19 Edwards delegates, the percentage sum doesn’t equal 100%:
Clinton needs 177.5 (69.5%) of the remaining 255.5 supers
Obama needs 99 (38.7%) of the remaining 255.5 supers
Bullet point 3: Then I decided to keep going and figure out the worst-case-for-Obama inclusion of FL and MI (numbers gleaned from DemConWatch, scenario 5), which means:
- need 2208.5 delegates to clinch
- FL pledged delegates allotted as per vote (105 Clinton, 67 Obama, 13 Edwards)
- FL super delegates committed (8 Clinton, 5 Obama)
- FL super delegates uncommitted (13)
- MI pledged delegates allotted as per vote (73 Clinton, 0 Obama)
- MI super delegates committed (7 Clinton, 1 Obama)
- MI super delegates uncommitted (21)
This yields, by my calculations:
Total w/o uncommitted supers for Clinton: 1890+150 = 2040
Total w/o uncommitted supers for Obama: 1932.5+67 = 1999.5
Due to the 32 Edwards delegates, the percentage sum doesn’t equal 100%:
Clinton needs 168.5 (58.2%) of the remaining 289.5 supers
Obama needs 209 (72.2%) of the remaining 289.5 supers