It's simple math, really. The GOP selects its nominee by a delegate system. Through the current state primaries and caucuses, the various candidates are accumulating delegates. Whoever has the majority of delegates at the time of the party convention this Summer will be the GOP nominee.
However, a great many of those delegates come from states that simply will not, under any reasonable forecast, yield any electors for the Republican nominee in November. Thus, although New York's 101 delegates, New Jersey's 52 delegates and Connecticut's 27 delegates will help to select the GOP nominee, those states will not do a thing to help that nominee get elected this Fall.
Many people tout John McCain's "electability." Of course, "electability" contests seem always to feature McCain-Clinton or McCain-Obama matchups in national popular-vote polls. The popular vote, my friends, does not secure you the Presidency. Ask Al Gore. To win, you have to win the Electoral College. One simple fact remains clear, reinforced by today's results in Kansas—John McCain cannot win in the South. With the low GOP turnout a McCain ticket is certain to produce in the South, the Dems may have a better chance of picking off some Southern states than they have had in my lifetime. McCain does a great job winning Republican primaries in the Northeast, but he cannot win there in November. He is not a wise selection for Republicans.
Let the argument begin, but I'll be taking names for "I told you so"s in November. [grin]