Can I claim FL as my State of Residence even though I am a doctor fulfilling my medical residency obligations in PA?

I am a doctor and consider myself a resident of Florida and am currently fulfilling my medical residency obligations in PA.  As a medical resident, I receive a stipend and other benefits.  However, I currently have no intention to remain in PA after my three year medical residency is completed. Rather I have every intention to return to Florida.  Do I continue to continue to claim Florida as my State of residence or should I temporarily claim PA because I am renting an apartment and receiving a stipend? My drivers permit and vehicle registration are still issued out of Florida.