Well, on the page of the "Comisión Estatal de Elecciones", there is
Primarias Locales 2012 PNP
Primarias Locales 2012 PPD
Primaria Especial Senado PNP
Primarias Partido Republicano 2012.
No Democrats.
That doesn't answer my question. The reason there are no Democrats is because Obama's nomination is not contested. But there is a quirk in the local party system that makes it a bit strange.
PPD is a pro-Commonwealth (pro-status quo) party, which is, essentially an affiliate of the (US) Democratic party - among its members the Republican supporters are either negligible or non-existent. However, the pro-statehood PNP is mixed: it's a coalition of those who in national politics think of themselves as Republicans and of pro-statehood Democrats. So, my question was, whether a PNP member, who would be showing up for the PNP caucus to select PNP candiates for local offices, but who is self-identified as a Democrat for the purposes of the US politics, would still vote in a Republican presidential election with his fellow PNP members, or would he only vote for the local candidates. It's a kind of a strange local PR version of the question, whether the caucus is open or closed
))