Detroit ranked as most liberal city in the country

The Bay Area Center for Voter Research ranked Detroit as the most liberal city in the country. Their definition of liberal cities are "those who voted for liberal candidates". I am assuming they are referring to Democrats, Greens, and Ralph Nader.

They ranked cities over 100,000 people and how they voted in the 2004 election. The list is here down in Appendix 3

The Michigan cities on the list of 236 are as follows:

1. Detroit - 93.65% Kerry
10. Flint - 83.07% Kerry
27. Ann Arbor - 76.51% Kerry
66. Lansing - 65.86% Kerry
113. Warren - 55.60% Kerry
116. Grand Rapids - 55.30% Kerry
161. Sterling Heights - 47.65% Kerry
179. Livonia - 44.64% Kerry

Hmmmm...Detroit and Flint lost 1/2 of their population in the last 50 years. Coincidence as to the effectiveness of liberal policies?????