Three members of the Wilno branch of the National Party were arrested and sent to the Bereza Kartuska prison. The National Party was a Polish political party formed on October 7, 1928. It was comprised of most of the political forces of Poland's National Democracy right-wing political camp, and were one of the main opponents of the Sanacja regime. It was one of the largest opposition parties with over 200,000 members.(shortly before WW2)
A Double Referendum was held in Poland. One concerned enfranchisement, while the other dealt with state property. The first was ordered by the President, while the other were created on the basis of resolution made by the Sejm. All except one were approved by over 90% of voters. However, voter turnout was just 32%, well below the 50% threshold required to make the referendums valid.