Today in National Polls: Clinton’s National Lead Holds

Nationally Clinton leads Democrats with 45 percent to Obama’s 23 percent. Giuliani is ahead of Mike Huckabee by a smaller margin, 26 percent to 18 percent. [AP/Ipsos]

She also has a big lead in Nevada, where Mitt Romney holds a smaller one. [American Research Group]

Meghan Thee considers the problem of cell phones and polling. [NY Times]