Election '08: New Hampshire Results: Hillary Cried, Obama Slide

Results (source CNN.com) with 99% reporting:

Democrats:
39% Clinton
37% Obama
17% Edwards
5% Richardson
1% Kuchinich
Less than 1% Biden, Gravel, Dodd

Republicans:
37% McCain
31% Romney
11% Huckabee
9% Guiliani
8% Paul
1% Thompson
1% Duncan Hunter

The race for both parties nominations is still wide open. However, the Democrats seem to have narrowed the field to Obama and Clinton while the Republicans still have three or four front-runners. Why do the bottom candidates continue to run when they know they have no chance?

What's next? The Michigan primaries for both parties will be January 15.

--Cicerone