Murphy served as Brooklyn's
City Attorney and
Corporation Counsel, and was
Mayor of Brooklyn in 1842 and 1843.
Congress In November 1842, prior to completion of his term as mayor of Brooklyn, Murphy was elected to the
United States House of Representatives, and he served one term, March 4, 1843, to March 3, 1845 (
28th Congress). He was an unsuccessful candidate for reelection in 1844, and served as a delegate to the
New York State Constitutional Convention of 1846. Murphy was returned to Congress in the November 1846 election, serving a second non-consecutive term from March 4, 1847, to March 3, 1849 (
30th Congress).
After Congress Murphy was a delegate to the
1852 Democratic National Convention. When the convention deadlocked after several ballots on the selection of a
presidential nominee, the delegation from Virginia decided to support a
dark horse—a northerner whose views on slavery were acceptable to southerners (
doughface)—who they intended to vote for as a unit in the hopes of rallying enough delegates around one candidate that he could win the nomination. The Virginia delegates considered Murphy and
Franklin Pierce. By one vote they decided to support Pierce, who went on to win the nomination and the presidency. From 1857 to 1861 Murphy served as
Minister to the Netherlands. In 1860 he received the
honorary degree of
LL.D. from Columbia. He was a member of the
New York State Senate (3rd D.) from 1862 to 1873, sitting in the
85th,
86th,
87th,
88th,
89th,
90th,
91st,
92nd,
93rd,
94th,
95th and
96th New York State Legislatures. During the
American Civil War Murphy opposed secession and supported the
Union. He was one of the prominent Brooklyn leaders who recruited and equipped the 3rd Senatorial Regiment, which was mustered into service as the
159th New York Volunteer Infantry Regiment. Murphy was the Democratic nominee for the U.S. Senate in
the 1867 election, but Republicans controlled the state legislature and elected
Roscoe Conkling. Murphy cast his ballot for
George F. Comstock in the caucus held to choose the Democratic nominee, and again in the full legislative election. In 1867 he also served as a delegate to the state constitutional convention. In 1868 Murphy was a candidate for the Democratic nomination for
Governor of New York, but the
Tammany Hall organization and its leader,
William M. Tweed, controlled the process and were able to effect the nomination of
John T. Hoffman. Murphy was the choice of Democrats in the legislature for the United States Senate
in 1869, but the Republican majority elected
Reuben Fenton. In the caucus to decide the Democratic nominee, Murphy cast his ballot for
Henry S. Randall, and he voted for Randall again in the election held by the full legislature. When
Fenton's term expired in 1875, Democrats controlled the legislature and Murphy
was a candidate, but
Francis Kernan won the support of the Democrats in the state legislature and was elected. ==Business career==