It's the first time her favorability rating has been underwater since 2001.
The group will deliver a petition with 365,000 signatures asking her to run in 2016.
The South Carolina senator launched run in his home state.
He is looking for any edge that might help cut into Hillary Clinton’s huge lead.
He said his son, Rand Paul, must be "on the right track" since he’s facing so much criticism.
Rep. Mike Coffman is turning down a Senate run to seek reelection to the House.
David McCabe 06/01/15 02:32 PM EDT
Other queries after his campaign launch included “How old is Martin O'Malley?”
Niall Stanage 06/01/15 01:31 PM EDT
But they also acknowledge that it won’t be an easy task.