Sentence:  In 1819, one of those municipal contests for the election of the Common Council happened, and it was attended with that profuse expenditure of money in direct bribery, <WSD>cooping</WSD>, treating, and in short in all the modes of demoralizing the classes exposed to such influence, which were the disgraceful distinctions of those elections. 
Meaning of the word marked with <WSD> tags:  To unlawfully confine one or more voters to prevent them from casting their ballots in an election.