Theodore Frelinghuysen was an American politician who represented New Jersey in the United States Senate. He was the Whig vice presidential nominee in the election of 1844, running on a ticket with Henry Clay.

The 1844 United States presidential election was the 15th quadrennial presidential election, held from Friday, November 1 to Wednesday, December 4, 1844. Democrat James K. Polk narrowly defeated Whig Henry Clay in a close contest turning on the controversial issues of slavery and the annexation of the Republic of Texas. This is the only election in which both major party nominees served as Speaker of the House at one point, and the first in which neither candidate held elective office at the time.