By Doug Stanglin | USA TODAY
New Mexico is the 15th state to join a compact system that aims to cast all its electoral votes for the winner of the national popular presidential vote, leaving the plan only 81 electoral votes shy of taking effect nationally.
Delaware joined the pact last week and Colorado in February.
A total of 15 states, commonwealths or jurisdictions, including the District of Columbia, have adopted the measure for a combined 189 electoral votes.
The compact kicks in as soon as it is adopted by states possessing a combined 270 electoral votes, or a majority of the 538 electoral votes.