In 1860, Abraham Lincoln won the election for the newly popular Republican Party. In 1864, he ran under the "National Union Party" that brought him together with vice president Andrew Johnson, a former Democratic politician.
The Republican party was originally created in the 19th century as an anti-slavery party whose members wanted to resist the expansion of slavery to newly created states and territories. Following the Civil War and Southern Reconstruction, the early Republican party supported widespread government intervention as well as big business. Many historians locate a shift in the Republican and Democratic platforms during the early 20th century, when Democrats like William Jennings Bryan began to advocate for big government, culminating in the Democratic-led New Deal coalition in the 1930s.