From Public Policy Polling's point of view their latest Iowa poll is all about Hillary. She leads Joe Biden 71% to 12% and leads all Republican in head to head match ups. Looking toward the Republican primary Rand Paul leads in this early caucus state. He is at 18% to 16% for Chris Christie, 14% for Jeb Bush, 11% for Marco Rubio, 10% for Ted Cruz, 6% for Rick Santorum, 2% for Bobby Jindal, and 1% for Susana Martinez.
When it comes to the general election Clinton is a clear favorite against all Republicans. Chris Christie comes closest to her but still trails by 7 points at 43/36. After that it's Paul Ryan trailing by 9 at 49/40, Rand Paul down 11 at 48/37, Marco Rubio down 12 at 47/35, and Jeb Bush down 14 at 50/36.
Paul clearly attracts some of his father's supporters but is likely unknown to many independent and even some Republican voters. Although this poll doesn't show it he has strong support among the libertarian leaning left for the positions he has taken on the use of drones and his outspoken criticism of the NSA surveillance programs. I like his chances.