What were the beliefs of the Whig Party in the election of 1840?
In the presidential election of 1840, the Whigs essentially had very little in the way of beliefs. As one book (America: A Narrative History, by Tindall and Shi, 5th Ed. p. 480) says, "The Whigs had no platform."
The reason for this is that the Whig Party was a party made up of a coalition of people whose main commonality was that they hated Andrew Jackson and the Democrats. The Whigs drew support from many different segments of the population. They had anti-Masonic elements. They had anti-slavery Democrats. They had former Democrats who supported the Bank of the United States.
Because of this diversity, they did not try to run on a platform but ran, instead, on the claim that their candidates for president were regular people from humble backgrounds.