2. In 1839, a political party called the Whig party formed because of dislike for Andrew Jackson's Democratic party. The Whig party was successful for several years until about 1850 when it started losing members and started to show signs of collapse. Mostly because of slavery. In 1854, what was left of the Whigs merged with the Republican party. | 2. In 1839, a political party called the Whig party formed because of dislike for Andrew Jackson's Democratic party. The Whig party was successful for several years until about 1850 when it started losing members and started to show signs of collapse. Mostly because of slavery. In 1854, what was left of the Whigs merged with the Republican party. |