Politics 2012: Parties to caucus in American territories Republican will caucus to consider who they think should be the party's presidential nominee not only stateside, but also in American territories. Republicans will caucus to consider who they think should be the party's presidential nominee not only stateside, but also in American territories. The 2012 Puerto Rico Republican primary in Puerto Rico will be March 18. The winner-take-all primary has 23 delegates at stake. The U.S. Virgin Islands Republican caucuses are scheduled for Saturday, as are caucuses for Guam and the North Marianas Islands. The 2012 American Samoa Republican caucuses are March 13. The Virgin Islands, Guam, American Samoa and North Marianas will send nine delegates each to the Republican National Convention in Tampa, Fla., in August.