The 1980 Mayagüez-Aguadilla Senate election, The first senate election of future senate president, and Longest serving legislator in Puerto Rico's History with 10 legislative assemblies under his belt, then Representative Antonio "Tony" J. Fas Al Zamora.
Occuring in one of the PPD's then Strongholds of Mayagüez, and the south west of the island, Tony Fas and his seat-mate Miguel A. Denes Soto were able to beat the PNP slate by a combined 7.23% through their strength in Mayagüez, the South West, and the west of the Cordillera Central, and even holding the PNP to less than a percent in their stronghold in the north, the Aguadilla Area.
Tony Fas himself would represent this district up to and until the 1996 Election, where he would run, and win, one of the Islands 11 Regular At-Large Seats, and would become senate president in the 2000-2004 Term, and eventually leave the legislature in the 2016 elections.