Tallmadge became active in politics as a
Jacksonian. He was a member of the
New York State Assembly (
Dutchess Co.) in
1828, and he served in the
New York State Senate (2nd D.) from 1830 to 1833, sitting in the
53rd,
54th,
55th and
56th New York State Legislatures.
United States Senator In
1833, he was elected as a
Jacksonian Democrat to the
United States Senate for the term beginning on March 4, 1833. In
1838, he was a member of the "Conservatives," a faction of former Democrats unhappy with the policies of
Andrew Jackson's successor,
Martin Van Buren and Van Buren's grip on New York politics as head of the
Albany Regency political machine. The conservatives endorsed the
Whig candidates for Governor and Lieutenant Governor,
William H. Seward and
Luther Bradish, who were narrowly elected over incumbents
William L. Marcy and
John Tracy. The defection of the conservatives was considered a harbinger for the
1840 presidential election, at which Van Buren was defeated by
William Henry Harrison. By the time of New York's
1839 election for U.S. Senator, Tallmadge had become identified with the
Whigs, who nominated him for reelection. Democrats controlled the State Senate, and they objected to Tallmadge because of his decision to abandon Van Buren. By refusing to vote, the Democrats in the State Senate prevented any candidate from obtaining a majority. As a result of the legislature's failure to make a choice, Tallmadge's seat became vacant on March 4, 1839. By 1840, the Whigs controlled both houses of the legislature. On January 13, 1840, they reelected Tallmadge to the Senate, and indicated in their approved resolutions that the effective date was as of March 4, 1839. He took his seat on January 27, 1840, and served until June 17, 1844, when he resigned to accept appointment as a territorial governor. In 1840, Tallmadge was offered the Whig nomination for vice president. He declined, and
John Tyler was nominated and elected on the Whig ticket with Harrison. According to published accounts in 1841, Tallmadge also declined a cabinet post and an ambassadorship, because he preferred to remain in the Senate.
Governor of Wisconsin Territory In the early 1840s, Tallmadge purchased a large tract of land in what became
Fond du Lac, Wisconsin, in anticipation of constructing a home for his retirement. In 1844, John Tyler, who had become president following Harrison's death, offered Tallmadge the governorship of Wisconsin Territory. He accepted, and moved to Fond du Lac. The Senate confirmed the appointment in June, and Tallmadge arrived in Wisconsin in August.
James Duane Doty, who had been governor since 1841, had a contentious relationship with the territorial legislature. Although legislators were initially suspicious of Tallmadge, who had not lived in Wisconsin prior to his appointment, he won them over by taking a conciliatory approach in his initial message. Promising not to take an overly partisan approach, he advocated for the expansion of railroads, in keeping with the position he had taken as a state legislator and a U.S. Senator. He also argued against extending the naturalization period for Wisconsin citizenship to 21 years, and promoted experimental farms and agricultural societies. The legislature authorized printing and distribution of his message, including 750 copies in German, the first time Wisconsin legislators had ever taken such an action. The 1844 presidential election was won by Democrat
James K. Polk. In April 1845, Polk nominated
Henry Dodge to serve as territorial governor. Dodge, who had also been Wisconsin Territory's first governor, was easily confirmed by the U.S. Senate, and assumed his new post on April 8, 1845.
Later years Tallmadge decided to stay in Wisconsin, and built his planned residence in Fond du Lac, where he practiced law while living in semi-retirement. He also maintained a home in
Washington, D.C., where he frequently traveled to serve as an unofficial ambassador for Wisconsin to the federal government and lobbyist for its interests. Later in his life Tallmadge became a
spiritualist, and was convinced of the existence of the
afterlife. He had previously been a believer in premonitions, and claimed he had one that resulted in him narrowly escaped death aboard the USS
Princeton when a
cannon exploded and took the lives of five people. In the 1840s, he began to claim that he was visited by spirits, and he authored introduction to Charles Linton's
The Healing of the Nations, a book which Linton claimed had been dictated to him by ghosts. He also wrote an Appendix to the first volume of
Spiritualism by
John W. Edmonds and George T. Dexter. After the death of
John C. Calhoun, Tallmadge claimed to be visited by his spirit, and said that it could communicate with him. Tallmadge was also reported to be a believer in other supposed spirit communications, including the floor and table rappings that typically accompanied
séances. ==Personal life and family==