In Bolivia's political landscape, what party has dominated for two decades before the runoff election?

The Movement Towards Socialism Party (MAS) has been the dominant political force in Bolivia for the last two decades. Its leadership and policies have significantly shaped the country's socio-economic landscape, particularly under the presidency of Evo Morales, who was in office from 2006 until 2019. The party's platform includes a focus on indigenous rights, social justice, and economic reforms aimed at reducing poverty and inequality in Bolivia. This dominance is reflected in several election victories, and MAS has maintained a robust presence in the Bolivian political scene through various challenges.

Other parties mentioned, like the Democratic Unity Party and the Nationalist Revolutionary Party, have had historical significance in Bolivian politics, but they do not hold the same level of recent influence or power as the MAS. The Bolivian Socialist Party, while relevant in earlier decades, also does not match the current political impact of the Movement Towards Socialism.