Elections to the Constituent Reichstag of the North German Confederation were held on 12 February 1867, with run-off elections during the following weeks. The National Liberal Party emerged as the largest party, winning 80 seats and receiving strong support in Hanover, Kassel and Nassau. Voter turnout was around 65% in Prussian constituencies. After the Constituent Reichstag had drawn up and agreed a constitution, fresh elections were held in August.
The North German Confederation were divided into 297 single-member electoral constituencies, of which 236 were in Prussia. All men over the age of 25 and not in receipt of public assistance were eligible to vote.