General elections were held in Bolivia on 7 May 1989. As no candidate for the presidency received over 50% of the vote, the National Congress was required to elect a President on 6 August. Although the Revolutionary Nationalist Movement had received the most votes, its candidate for President Gonzalo Sánchez de Lozada was defeated by Jaime Paz Zamora of the Revolutionary Left Movement (MIR) in the Congressional vote, despite the MIR only finishing third in the public vote.

Campaign

In the initial months of 1989, the Revolutionary Nationalist Movement (MNR) tried in vain to postpone the election date, arguing that the deadline for electoral registration restricted citizen participation. In December 1988, the party's delegation in Congress had managed to amend the electoral law of 1986. Arguing that the new registration requirements, which limited registration to citizens who possessed cédulas de identidad (national identity cards), constituted a violation of universal suffrage, the MNR pushed through legislation that added birth certificates and military service cards as valid registration documents. Nationalist Democratic Action (ADN) refused to go along with its ally and eventually charged the MNR with conducting fraudulent registrations. By mid-February this issue had triggered the rupture of the pacto.

1989 Bolivian general election

The end of the pacto revealed an old reality about Bolivian politics. To achieve power, broad electoral alliances must be established; yet, electoral alliances have never translated into stable or effective ruling coalitions. On the contrary, electoral alliances have exacerbated the tensions built into a complex system. Thus, once in power, whoever controls the executive must search for mechanisms or coalitions such as the pacto to be able to govern. This search was the single most important challenge facing Bolivian politicians into the 1980s.

1989 Bolivian general election

As expected, every political party was forced to scramble for new allies. The ADN joined forces with the now minuscule Christian Democrats by naming Luis Ossio as Banzer's running mate in an effort to attract other political elements. Banzer led every major poll, and the ADN repeatedly called for Congress to respect the first majority to emerge from the May 7 election.

1989 Bolivian general election

The situation was more complex in the MNR where, after a bitter internal struggle, Gonzalo Sánchez de Lozada, a pragmatic former Minister of Planning and Coordination and prominent entrepreneur, captured the party's nomination. The MNR's strategy was to develop Sánchez de Lozada's image as a veteran movimientista (movement leader) to capture populist support. At the same time, party strategists intended to attract support from outside the party by building on the candidate's entrepreneurial background. The task of converting the candidate into an old party member apparently succeeded: old-line populist politicians dominated the first slots on the party's legislative lists. The naming of former President Walter Guevara Arze as the vice presidential candidate was perceived as further evidence of the party's success in influencing the candidate.

Following a similar electoral logic, the MIR sought to broaden its base of support by establishing ties with several parties, including Carlos Serrate Reich's 9 April Revolutionary Vanguard, the Revolutionary Front of the Left, and a number of dissidents from the MNRI. Paz Zamora, the MIR's candidate, led in some polls, and most analysts agreed that he would pose a significant threat to the MNR and ADN.

The left attempted a comeback following the disastrous experience of the UDP years. Headed by Antonio Aranibar's Free Bolivia Movement, the left grouped into a broad front labelled the United Left (IU). The IU brought together splinter factions of the MIR, the Socialist Party-1, and the Communist Party, and it counted on the support of organized labor, especially the COB. Given the historical divisions within the Bolivian left, however, the IU was not perceived to be a serious contender. If it could maintain unity beyond the 1989 elections, observers believed that its impact might be greater than anticipated.

The main newcomer to national electoral politics, although no stranger to La Paz politics, was Carlos Palenque. Popularly known as el compadre (the comrade), Palenque was a former folksinger turned radio and television owner and talk show host. His "popular" style of broadcasting had always enjoyed widespread appeal in the working-class and marginal neighborhoods surrounding La Paz. For at least a decade, Palenque had been regarded as a possible candidate for mayor of La Paz; during the 1987 municipal elections, his name was under consideration by the MNR.