I would like to do this electronically.
TurboTax does not support Puerto Tax returns.
You can file Puerto Rico tax documents at Departamento de Hacienda.
For help about what you should file: Topic No. 901 Is a Person With Income From Puerto Rico Required to File a U.S. Federal Income Tax Return?
Thank you. The Hacienda site states that they have qualified providers for electronic filing. I used PRSoft and had a good experience completing my Puerto Rico filing.