Nationalist Democratic Action (Spanish: Acción Democrática Nacionalista) is a right-wing political party in Bolivia led by Óscar Daza Márquez.

Indeed, ADN would go on to claim authorship to some of the major neoliberal economic reforms instituted by President Paz to curb galloping hyperinflation, repress labor unions, and reduce the size of the government.

He was the first former dictator in Latin America's recent history to transition successfully to democratic politics and return to power by way of the ballot box.

During his tenure, he launched—under the guidelines outlined by the United States—a program to fight drug-trafficking in Bolivia, which called for the eradication of coca, a controversial strategy.

In the mid-2000s, it appeared that ADN has become a defunct former party, replaced by Quiroga's new PODEMOS organization, although its structures, ideology, and supporters remained basically the same.