Puerto Rico: Politics, Mainland Style

Three decades ago, Roberto Sánchez Vilella forswore the engineering career for which he had been trained and, at the invitation of Luis Muñoz Marin, entered Puerto Rican politics. Muñoz's Popular Democratic Party prospered. Its founder became so revered and pow erful a figure that when, in 1964, he relinquished the governorship after 16 years, he had no difficulty anointing Sánchez, his protégé and closest ad viser, as his successor. Last week Sánchez formally broke with his old men tor by announcing that he would run for a second term this year — against Muñoz's wishes.

Sánchez's declaration was a shocker...