| 1860 presidential election | |
  Nominees Lincoln and Hamlin | |
| Convention | |
|---|---|
| Date(s) | May 16–18, 1860 |
| City | Chicago, Illinois |
| Venue | The Wigwam |
| Candidates | |
| Presidential nominee | Abraham Lincoln of Illinois |
| Vice-presidential nominee | Hannibal Hamlin of Maine |
| Other candidates | William H. Seward |
The 1860 Republican National Convention was a presidential nominating convention that met May 16–18 in Chicago, Illinois. It was held to nominate the Republican Party's candidates for president and vice president in the 1860 election. The convention selected former representative Abraham Lincoln of Illinois for president and Senator Hannibal Hamlin of Maine for vice president.
Entering the 1860 convention, Senator William H. Seward of New York was generally regarded as the front-runner, but Lincoln, Governor Salmon P. Chase of Ohio, former representative Edward Bates of Missouri, and Senator Simon Cameron of Pennsylvania all commanded support from a significant share of delegates. Seward led on the first ballot but fell short of a majority, while Lincoln finished in a strong second place. Cameron's delegates shifted to Lincoln on the second ballot, leaving Lincoln essentially tied with Seward. Lincoln clinched the nomination on the third ballot after consolidating support from more delegates who had backed candidates other than Seward.
Hamlin was nominated on the second vice presidential ballot, defeating Cassius Clay of Kentucky and several other candidates.
The ticket of Lincoln and Hamlin went on to win the 1860 general election. After taking office in 1861, Lincoln appointed all four of his major opponents to his cabinet: Seward for secretary of state, Chase for secretary of the treasury (and later for chief justice), Bates for attorney general, and Cameron for secretary of war.