She served as a trustee of the
Ann Arbor board of education from 1984 to 1992. She was a member of the
Michigan State House of Representatives between 1993 and 1994. Rivers was elected as a
Democrat from Michigan's 13th District to the
United States House of Representatives for the
104th and to the three succeeding Congresses, serving from January 3, 1995, to January 3, 2003. After Michigan lost a district in the
United States 2000 Census reapportionment, much of her district was merged into a redrawn
15th District together with long-time incumbent
John Dingell. Rivers challenged Dingell in the Democratic primary for the new 15th. However, running in a district that was over 65 percent new to her, she lost to Dingell by 18 points. ==Political positions==