21條修正案下,全國禁酒令於1933年被廢除。 Federal Elections 2012: ElectionResults for the U.S. President, the U.S. Senate and the U.S. House of Representatives 互联网档案馆的存檔,存档日期2013-10-02
National Elections: A Conceptual Framework for the Analysis of European ElectionResults'. European Journal of Political Research, Vol. 8, No. 1, pp. 3–45
smallest centre-left positive majority in the new Parliament (377 mandates). EU electionresults 2019: across Europe. The Guardian. 26 May 2019 [2024-08-25]