Through the mid-1970s, Zhivkov continued balancing the older and younger generations and the reformist and conservative factions in his party, with only occasional purges of key officials. But in 1977, the purge of liberal Politburo member Boris Velchev introduced a massive reorganization of provincial party organizations that ousted 38,500 party members. This move was designed to limit the atmosphere of liberalization that had followed the 1975 Helsinki Accords (see Glossary). That mood and an economic crisis caused by oil shortages in the 1970s aroused discontent and demonstrations in Bulgaria in the late 1970s.

At the end of the decade, two more crises confronted Zhivkov: in 1978 the murder of exiled writer Georgi Markov was widely attributed to Bulgarian State Security, damaging the country's international image; and in 1980 the Polish Solidarity (see Glossary) movement alarmed the entire Soviet Bloc by attracting an active anticommunist following in a key Warsaw Pact (see Glossary) country. Although the magnitude of Bulgarian social discontent was much less than that in Poland, the BCP ordered production of more consumer goods, a reduction of party privileges, and limited media coverage of Poland in the early 1980s as an antidote to the "Polish infection."

Meanwhile, in 1980 Zhivkov had improved his domestic position by appointing his daughter Liudmila Zhivkova as chair of the commission on science, culture, and art. In this powerful position, Zhivkova became extremely popular by promoting Bulgaria's separate national cultural heritage. She spent large sums of money in a highly visible campaign to support scholars, collect Bulgarian art, and sponsor cultural institutions. Among her policies was closer cultural contact with the West; her most visible project was the spectacular national celebration of Bulgaria's 1,300th anniversary in 1981. When Zhivkova died in 1981, relations with the West had already been chilled by the Afghanistan issue, but her brief administration of Bulgaria's official cultural life was a successful phase of her father's appeal to Bulgarian national tradition to bind the country together.

Data as of June 1992