On September 16, 2003, a motion was brought to Parliament by the Canadian Alliance (now the Conservative Party) to once again reaffirm the heterosexual definition of marriage. The same language that had been passed in 1999 was brought to a free vote, with members asked to vote for or against the 1999 definition of marriage as "the union of one man and one woman to the exclusion of all others." Motions are not legislatively binding in Canada, and are mostly done for symbolic purposes. The September vote was extremely divisive, however. Prime Minister Chrétien reversed his previous stance and voted against the motion, as did Paul Martin (who later became prime minister) and many other prominent Liberals. Several Liberals retained their original stance, however, and thus the vote was not defined purely along party lines. Controversially, over 30 members of the House did not attend the vote, the majority of whom were Liberals who had voted against legalizing same-sex marriage in 1999. In the end, the motion was narrowly rejected by a vote of 137–132.