Frankly, Obama matches up much better with McCain than Hillary does. However, we never know how the next month will actually shape up. So, below the flip is my assessment of how states will play depending on the nominee.
Obama vs. McCain
For Obama, safe states are: California, Connecticut, Delaware, Hawaii, Illinois, Massachusetts, Maryland, New Jersey, New York, Oregon, Rhode Island, Vermont, Washington State, and Washington DC.
13 States + DC (~38% of U.S. population, 186 electoral votes)
For McCain, safe states are: Arizona, Alabama, Alaska, Arkansas, Indiana, Idaho, Kansas, Kentucky, Montana, Nebraska, North Dakota, Oklahoma, South Carolina, South Dakota, Tennessee, Texas, Utah, West Virginia, and Wyoming.
19 States (~25% of U.S. population, 144 electoral votes)
States leaning for McCain are: Florida, Georgia, Louisiana, Mississippi, Missouri, North Carolina
6 States (~16% of U.S. population, 96 electoral votes)
Toss-up States are: Colorado, Maine, Nevada, New Hampshire, New Mexico, Ohio, Virginia
7 States (~10% of U.S. population, 60 electoral votes)
States leaning for Obama are: Iowa, Michigan, Minnesota, Pennsylvania, and Wisconsin
5 States (~11% of U.S. population, 65 electoral votes)
Obama: 251 with leaning states
McCain: 227 with leaning states
Toss-ups left: 60 electoral votes
Clinton vs. McCain
For Clinton, safe states include: California, Connecticut, Delaware, Hawaii, Illinois, Massachusetts, Maryland, New Jersey, New York, Oregon, Rhode Island, Vermont, Washington State, and Washington DC.
13 States + DC (~38% of U.S. population, 186 electoral votes)
For McCain, safe states include: Arizona, Alabama, Alaska, Georgia, Indiana, Idaho, Kansas, Kentucky, Louisiana, Mississippi, Montana, Nebraska, North Carolina, North Dakota, Oklahoma, South Carolina, South Dakota, Tennessee, Texas, Utah, West Virginia, and Wyoming.
22 States (~31% of U.S. population, 183 electoral votes)
States leaning for McCain are: Arkansas, Florida, Missouri, and Virginia
4 States (~12% of U.S. population, 57 electoral votes)
Toss-up States are: Colorado, Maine, Nevada, New Hampshire, New Mexico, Ohio
6 States (~8% of U.S. population, 47 electoral votes)
States leaning for Clinton are: Iowa, Michigan, Minnesota, Pennsylvania, and Wisconsin
5 States (~11% of U.S. population, 65 electoral votes)
Clinton: 251 with leaning states
McCain: 240 with leaning states
Toss-ups left: 47 electoral votes
Clinton's advantages over Obama
Clinton's may have an advantage in Arkansas, which might be in play if she is the nominee, but leaning Republican. Other than that, she has no advantages.
Obama's advantages over Clinton
Obama puts Georgia, Louisiana, Mississippi, and North Carolina in play, to only leaning McCain, and turns Virginia into a swing state. Although the numbers are pretty close, Obama ends up with a better opportunity to win, as Republicans unimpressed with McCain are less motivated.
It will still be a close race for Clinton-McCain. If I were to pose a guess on swing states, without their running mate yet considered, I think McCain would beat Hillary in Colorado, Nevada, and, New Mexico, to obtain 259 electoral votes, and Hillary would win all of Maine, New Hampshire, and Ohio to obtain 279 electoral votes.
For Obama-McCain, my guess is that McCain takes Colorado, Nevada, and New Mexico, for 246 electoral votes. Obama takes all of Maine, New Hampshire, Ohio, and Virginia for 292 electoral votes.
It seems to me coattails might affect four races -- La., NM, NH and Colorado. (Cook may have Me as Leans GOP, but Collins ain't losing there)
I would submit that Clinton helps more in N.H. with hr appeal to women voters, who threw the primary her way, and in N.M., with her appeal to Hispanics, who might move in some number to McCain if Obama is the nominee.
That only leaves 2 seats, Co. and La., and I can't really comment on them.
And, Lowell, one emerging issue that I think deserves a closer look, and that I am sure we will be hearing more about it today, is the difference between Obama's performance in caucus states versus primary states. I don't want to speculate on the reasons for this dichotomy, but it existence is undeniable.
I think tomorrow's primary will be very telling. Obama clearly has the edge here in enthusiasm and intensity. If Clinton should win the primary, or even be within 3 or 4 points, however, it would suggest that while the depth of his support is huge, the breadth of it is not. The implication of that for november are TBD, but they would require consideration.
On the other hand, if the polls are right and Obama wins Virginia by a huge margin, then I think Clinton is in trouble, in the same way that had she lost California, or even if it had been close, she would have been in trouble.
Indeed, there is some question whether Clinton offers a coattail advantage anywhere. One of the sad truths about the Bill Clinton administration is that, no matter how good it may have been for the country or the economy, it was pretty much a disaster for the rest of the Democratic Party. We lost both houses of Congress after 2 years of Clinton leadership, for the first time in 40 years. We took a beating in governorships and state legislatures, too. It took a dozen years to get the House back, and our Senate majority is nominal at best, since it hinges on the leadership's pandering to Joe Lieberman, Party Of One. A lot of the fingerpointing of 1994 was aimed, fairly or not, at Hillary and the "two for the price of one" chatter coming out of the White House. I'm not sure I see how that has changed, other than that Bill's influence as First Spouse promises to be greater than Hillary's was, given the senior statesman role he holds as ex-president.
The facts, of course, are the facts. The debate is over the extent that Clinton bears responsibility.
Lowell, I'm sure you're pretty busy today and tomorrow. Good luck.
CO went 65% Obama with tremendous caucus turn-out. Mark Udall is from a well known political family and well liked. Should Obama get the nomination..Udall will be joining James Webb in the Senate with a comfortable margin. He will work hard to win his Senate race, regardless of who wins the Presidential nomination.