At Wisconsin statehood, the Senate had only 19 districts. The 1st District consisted of
Brown,
Calumet,
Manitowoc and
Sheboygan counties. For the 1853 session, the Senate was expanded to 25 members, and the 1st District lost Brown County. For the 1857 session, the Senate was again expanded, to 30 members, and the District was reduced to Sheboygan County alone (the rest of the district became the new
19th District). As of 1862, the Senate expanded to 33 seats, a size it would retain well into the 21st century; the 1st District remained unchanged. The Senate was totally redistricted in 1876; Sheboygan County was now part of the
20th Senate District (along with part of
Fond du Lac County). The new 1st District was made up of
Door,
Kewaunee,
Oconto and
Shawano counties, which had previously been part of the
2nd and
8th Districts. Kewaunee and Shawano counties were removed from the district in 1888. Kewaunee was later re-added and Oconto removed in 1892—this district remained consistent for thirty years. In 1922, the district moved to roughly its present boundaries when Marinette was removed and Manitowoc county was re-added. This district was stable for fifty years. From 1972 to 2012 the district had been edited 6 times adding and removing small portions of Brown, Calumet,
Fond du Lac, Manitowoc, and
Outagamie counties. ==List of past senators==