Democratic front-runner Mr John Kerry is looking for a win in today's polls in Wisconsin that could strenghten his grip on the presidential election nomination.
Mr Kerry, a four-term Massachusetts senator who has a commanding lead in the race for the Democratic nomination after winning 14 of the first 16 presidential contests, has already begun looking ahead to a November election fight with President George W. Bush.
But rivals Mr Howard Dean and Mr John Edwards are taking a final stab in Wisconsin at slowing Mr Kerry's surge ahead of a March 2nd round of ten contests in states such as New York and California that could put him over the top.
It could be a final stand for Mr Dean, the one-time front-runner, who soared to the top of the polls and broke party fund-raising records in 2003 before crashing in January as Mr Kerry surged.
Mr Edwards, the North Carolina senator who administered one of the two losses suffered by Mr Kerry, has promised to push on to March 2nd in hopes he will pick up momentum.