It's obvious. By definition conservatives like to maintain the old and mistrust the new. We liberals, on the other hand, are always open to new ideas and methods. Remember FDR's technique? Try something. If it doesn't work, try something else.

Ok, ok...part of that's facetious, but still...

Maybe it's because so much of Bush's money comes from such a small number of people who donate the legal maximum of $2000 per person by going to dinners and other such in-person fundraisers but then can't give any more, whereas Kerry has a much wider fundraising base where many more people give smaller amounts of money, but have room to give more with each new outrage. It's hard to gather such a large number of small contributions in person, but the net is a perfect place to do so. Therefore, Kerry (and Dean before him) gets so much more in contributions over the net because it's the only practical way to gather the kind of small grassroots contributions that are fueling his campaign. Bush doesn't need the net because he's getting his money in larger chunks from smaller numbers of people.