In May and August 1988
massive waves of workers' strikes broke out in the Polish People's Republic. The strikes, as well as street demonstrations, continued throughout spring and summer, ending in early September 1988. These actions shook the
communist regime of the country to such an extent that it decided to begin talking about recognising Solidarity (
Polish: Solidarność), an "unofficial" labor union that subsequently grew into a political movement. As a result, later that year, the regime decided to negotiate with the opposition, which opened the way for the 1989
Round Table Agreement. The second, much bigger wave of strikes (August 1988) surprised both the government and top leaders of Solidarity, who were not expecting actions of such intensity. These strikes were mostly organized by local activists, who had no idea that their leaders from Warsaw had already started secret negotiations with the communists. An agreement was reached by the communist
Polish United Workers' Party (PZPR) and the Solidarity movement during the Round Table negotiations. The final agreement was signed on 4 April 1989, ending communist rule in Poland. As a result, real political power was vested in a newly created
bicameral legislature (the
Sejm, with the recreated
Senate), whilst the office of
president was re-established. Solidarity became a legitimate and legal political party: On 7 April 1989 the existing parliament changed the election law and changed
the constitution (through the
April Novelization), and on 17 April, the Supreme Court of Poland registered Solidarity. Soon after the agreement was signed, Solidarity leader
Lech Wałęsa travelled to
Rome to be received by the Polish
Pope John Paul II. After all, Poland had not had a truly fair election since the 1920s, so there was little precedent to go by. This time, there would be open and relatively fair competition for many seats, both between communist and Solidarity candidates, and, in some cases, between various communist candidates. Solidarity was also given access to televised media, being allocated 23% of electoral time on
Polish Television. Some members of the opposition were worried that such tactics would gain enough votes from the less educated segment of the population to give the communists the legitimacy that they craved. Only a few days before June 4, the party Central Committee was discussing the possible reaction of the Western world should Solidarity not win a single seat. At the same time, the Solidarity leaders were trying to prepare some set of rules for the non-party MPs in a communist-dominated parliament, as it was expected that the party would not win more than 20 seats. Solidarity was also complaining that the way electoral districts were drawn was not favourable towards it; ==Participating parties==