Their FL poll suggests that Paul might even be 1st in their national primary poll.
I say:
1) Paul
2) Rubio
3) Christie
4) Ryan
5) Bush
Maybe. We don't have a lot to go on. The PA poll was also taken after the filibuster, and Paul was at 17% in that. For the record, PPP's last national poll (pre-filibuster) was:
https://uselectionatlas.org/FORUM/index.php?topic=169083.0
Rubio 22%
Ryan 15%
Bush 13%
Christie 13%
Huckabee 11%
Paul 10%
Jindal 4%
Perry 3%
Martinez 1%
For this one, I could see a close race between Paul and Rubio for first place.
PPP tweets:
https://twitter.com/ppppolls/status/318823239453376513
That actually represents no meaningful change from their February poll, which had Christie at 42% favorable and Paul at 61% favorable among GOP primary voters. Remains to be seen whether the lack of change in Paul's favorability portends a lack of gains in the primary matchup question.
I think that it's quite possible that Paul will have a significant bump in his polling numbers despite the static approval ratings. Looking back for comparison,
this PPP poll from last year in April shows Rubio with 53% at the time and having 10% of the vote, and
the last national one shows 54% approving with his vote share more than doubling at 22%.