- 11 that have tended to go Republican in recent elections. (Arkansas, Colorado, Florida, Iowa, Missouri, Nevada, New Mexico, North Carolina, Tennessee, Virginia, and West Virginia). Together they have 114 electoral votes.
- 6 that have been more likely to go Democratic in recent elections. (Maine, Michigan, New Hampshire, Ohio, Pennsylvania, and Wisconsin.) Together they have 76 electoral votes.
Arnone says for Dems to win in November they will have to win, in addition to the 15 Democratic states, enough of the 17 states and their
of 190 electoral votes to put them over 270.
He notes that both candidates are likely to carry the 15 solidly Democratic states. In deciding which is more apt to win the 17 battleground states, he begins with an examination of both Hillary and Obama's wins to date:
Hillary has won 17 state primary/caucuses. Of them,
- 3 are Republican
- 5 are Democratic
- 9 up for grabs
Obama has won 21 states. Of them,
- 12 are Republican
- 9 are Democratic
- 6 are up for grabs
The 9 battleground states Hillary has won have 116 EV. The 6 battleground states Obama has won have 54 EV.
If Hillary wins the 15 Dem states and her 9 battleground states, she's at 312 EV.
If Obama wins the 15 Dem states and his 6 battleground states, he's at 250 EV.
(If Florida and Michigan EV's are removed from Hillary's count, she's at 268.)
Arnone notes:
While the results of primary/caucus votes ‐‐ especially those that are closed to Independents and Republicans ‐‐ may not indicate how a particular state will vote in a general election, they do give some indication of the relative strength of each Democratic Presidential candidate vis‐à‐vis each other as the potential nominee.
....Of the 9 battleground states whose primaries/caucuses Sen. Clinton has won,
her average margin of victory has been 12.6 percentage points. Excluding Florida and Michigan, in the 7 other battleground states whose primaries/caucuses Sen. Clinton has won, her average margin of victory has been 10.4 percentage points. Of the 6 battleground states whose primaries/caucuses Sen. Obama has won, his
average margin of victory has been 18.1 percentage points.
Assuming that:
(a) neither Sen. Clinton nor Sen. Obama will win those 19 states with 152 electoral votes that are likely to go Republican in November and
(b) either Sen. Clinton or Obama will win those 15 states with 196 electoral votes that are likely to go Democratic in November,
then based on the results of Democratic primaries/caucuses thus far in the battleground states, Sen. Clinton is more likely to win 9 battleground states with 116 electoral votes for a total of 312 electoral votes. Sen. Obama is more likely to win 6 battleground states with 54 electoral votes for a total of 250 electoral votes.
Here are the factors Arnone used to categorize the states:
- Results of recent Presidential elections
- Results of recent statewide elections
- Demographic trends among key segments of the voting population, especially the four swing groups of voters that the Democratic Presidential ticket needs to carry – Catholics, Hispanics/Latinos, older voters, and women.
His chart with state by state numbers begins on page 4.
Arnone also analyzes the upcoming primaries (except Guam and Puerto Rico which don't get electoral votes.)
- 5 are solidly Republican: Indiana, Kentucky, Montana and South Dakota
- 1 is solidly Democratic: Oregon
- 2 are battleground states: West Virginia and North Carolina
If Obama can win both W.VA and N.C., he'll get another 20 electoral votes and reach the magic 270.
If he only wins N.C., he won't get past 265 votes in November. If he only wins W. Va., he won't get above 255 electoral votes.
If Hillary wins both states, her total is at 332. If she wins N.C. but not W.Va., her total would be 327. If she wins W.Va. but not N.C., her total is 317. In all three scenarios, she wins.
There are variables, Mr. Arnone says, that could make 2008 different than prior election years, particularly with respect to how the states are divided (Repub, Dem, Battleground.) He lists them on pages 10 and 11.
I've only summarized his methodology and findings, so please read his entire analysis rather than my explanation before expressing disagreement with it. I know he appreciates the feedback, but it's only valuable if it's of his work rather than my summary.