John Zogby

As we noted Tuesday, John Zogby has released its latest Nevada poll with some interesting and unexpected results.

While the poll showed Hillary Clinton picking up 2 points that Barack Obama dropped since the April 12 poll and undecideds dropping by another 2 points, things on the Republican side revealed a far more volatile race. Rudy Giuliani and John McCain were the only two Republican candidates to lose support with Giuliani dipping 9 points, to McCain's 7. Fred Thompson and Ron Paul lead the Silver State gainers each increasing 6 points followed by Romney's 5 point and Mike Huckabee's 4 point gains with a 1 point increase in undecideds.

Hillary Clinton and Rudy Giuliani hold leads among likely Nevada presidential caucus participants, according to a new Zogby poll. Clinton leads Barack Obama by a 37%-19% margin, with John Edwards at 15%. Giuliani leads Mitt Romney by a 28%-20% margin, with Fred Thompson at 13%.

Clinton made a small move forward among likely Democratic caucus-goers in Nevada, while Giuliani - slipped nine points among likely Republican caucus. Clinton bumped from 35% to 37%, compared to a Zogby survey conducted in April. Obama dropped from 21% to 19% and Edwards remained even at 15% in both surveys.

On the Republican side of the aisle, Giuliani slipped from 37% in April to 28% now, Romney of Massachusetts moved up a bit from 15% to 20%, and Thompson posted support at 13%, up from 7% in April. John McCain slipped from a tie for second place at 15% last April to win just 8% in this latest survey. Ron Paul moved from a meager 1% support in April to 7% now, the poll shows.