Quinnipiac University National Poll:
46% - Hillary Clinton
40% - Chris Christie
50% - Hillary Clinton
38% - Rand Paul
46% - Chris Christie
35% - Joe Biden
42% - Rand Paul
42% - Joe Biden
...
Favorable Ratings:
45-18 Christie (+27)
55-38 Clinton (+17)
31-28 Paul (+3)
47-49 Obama (-2)
38-44 Biden (-6)
From June 28 - July 8, Quinnipiac University surveyed 2,014 registered voters with a margin of error of +/- 2.2 percentage points. Live interviewers call land lines and cell phones.
http://www.quinnipiac.edu/institutes-and-centers/polling-institute/national/release-detail?ReleaseID=1921