The Conservatives elected a floor leader, and in 1941 approached former Prime Minister Meighen, who had been appointed as a senator by Bennett, about becoming party leader again. Meighen agreed, and resigned his Senate seat, but lost a by-election for an Ontario seat in the House of Commons. He remained as leader for several months, although he could not enter the chamber of the House of Commons. Meighen sought to move the Tories to the left, in order to undercut the Liberals and to take support away from the Co-operative Commonwealth Federation (CCF, the predecessor of the New Democratic Party (NDP)). To that end, he sought to draft the Liberal-Progressive premier of Manitoba, John Bracken, to lead the Conservatives. Diefenbaker objected to what he saw as an attempt to rig the party's choice of new leader and stood for the leadership himself at the party's 1942 leadership convention. Bracken was elected on the second ballot; Diefenbaker finished a distant third in both polls. At Bracken's request, the convention changed the party's name to "Progressive Conservative Party of Canada." Bracken chose not to seek entry to the House through a by-election, and when the Conservatives elected a new floor leader, Diefenbaker was defeated by one vote.