6. Who has the most effective strategy?
The three Democratic front-runners in Iowa -- Hillary Clinton, John Edwards, and Barack Obama -- have each employed a unique strategy in an attempt to squeeze every last caucus-goer out to the polls. Edwards has aggressively courted the rural vote. Obama has hand-picked precinct captains and a fierce volunteer army. Clinton has earned heavy institutional support in the state. Which approach will lead to success?At right, Wayne Clinton, a precinct captain for Barack Obama, at an event in Boone, Iowa.
(Reuters Photo)

Text by James Pindell and Jason Tuohey

