Historically, these Suffolk polls may well be weak, but this particular poll is not an outlier...
http://www.realclearpolitics.com/epolls/2012/president/fl/florida_romney_vs_obama-1883.html
Rasmussen has Florida Romney +1 as opposed to Suffolk with Obama +1. Basically the same result... close race within the margin of error.
Rasmussen is much more of a clearer picture.