The country subsequently reverted to being a one-party state with the People's Revolutionary Party of Benin as the sole legal party. A National Revolutionary Assembly was established in 1977, and one-party elections were held in 1979, 1984 and 1989, before multi-party democracy was reintroduced at the start of the 1990s. Parliamentary elections held in February 1991 saw 12 parties and alliances win seats in the National Assembly, with the Union for the Triumph of Democratic Renewal (UTRD) emerging as the largest group with just 12 of the 64 seats. UTRD candidate Nicéphore Soglo subsequently won the presidential elections in March, beating incumbent Mathieu Kérékou in a runoff.