The major competitors for the presidential nomination were Cass, Secretary of State James Buchanan of Pennsylvania, and Supreme Court Justice Levi Woodbury of New Hampshire.

After readopting the two-thirds rule for selecting the nominee, the assembly turned to the thorny problem of competing delegations representing different factions of the New York party.

[4] The main competitors for the nomination were Senator Lewis Cass of Michigan, Secretary of State James Buchanan from Pennsylvania, and Supreme Court Justice Levi Woodbury from New Hampshire.

Van Buren, knowing he had no feasible path to winning the nomination without the full support of the New York delegation, promptly led the Barnburners in walking out of the convention.

Turning to the choice of a vice presidential running mate, the convention picked General William O. Butler of Kentucky[1] over General John A. Quitman of Mississippi, former Senator and Minister to France William R. King of Alabama, Secretary of the Navy John Y. Mason of Virginia, and Representative James Iver McKay of North Carolina.