forcing slavery down the throat of a freesoiler cartoon according to the cartoon, which political party supported popular sovereignty to determine if slavery would be permitted in the western territories

Democrats.

Explanation:

The "Forcing Slavery Down the Throat of a Free Soiler" card was made in 1856 and had a strong political content. It was used to represent the Republicans' charge that the Democrats wanted to nationalize slavery by force through popular sovereignty in the West. Cartoon featured a Free-Soiler settler, attached to a platform that belonged to the Democratic party. The settler's mouth was wide open and he was prevented from closing it, as the Democrats were pulling on his hair and beard, while Senator Douglas and President Pierce pushed a slave down his throat.

the answer would be a i think?