UPDATE: Monday 10:40 a.m.

Tally: Romney easily won with 83% of the vote and all 20 of the island's delegates.

Romney has 521 delegates, Santorum has 253, Gingrich has 136, and Ron Paul has 50.

The next big campaign stop is Illinois, which holds an open primary tomorrow. Polls close at 8pm EST on Tuesday, with 54 delegates up for grabs.