The Center Democratic Party appeared too late to qualify as one of the original parties in Janda's 1950-1962 ICPP study. It continued to1990 and qualified for the Harmel-Janda study of party change in Denmark, Germany, the U.K. and U.S.

The essay on party politics in Denmark from 1950 to 1962 says:

Also formed in 1973 to protest high taxes and the "leftist" tendencies of Danish government, the Center Democrats were only about half as successful as the Progress Party, but they lasted through subsequent elections in 1975 and 1977.

The essay on party politics in Denmark from 1963 to 2000 says:

The CD was founded in 1973 by Erhard Jakobsen after a split with the Social Democratic Party (SD). Over the course of the party's political life, it has managed to control between three and nine percent of the seats in the legislature, and held cabinet positions in the 1982-1988 and 1993-1996 governments. "They see their role as a central and moderating influence able to cooperate equally with socialist and nonsocialist parties" (Thomas and Oakley, 1998: 82).

Consult the index to variables for annual scores of the party's issue orientation, organizational complexity, centralization of power, and coherence from 1950 through 1990.