In the elections of 1922, Sleževičius was elected to the First Seimas, but LSLDP ended up with only 1% of the vote and 5 seats. On 24 November 1922, the party merged with the Peasant Union to form the Lithuanian Popular Peasants' Union (LVLS), with Sleževičius presiding over the political group in the Seimas. The First Seimas was short-lived and LVLS was successful in the elections of 1923, winning 17.9% of the vote and 16 seats, the largest single party in the Second Seimas.