Though he was outraged by the Wilson Administration's conclusion of a treaty that expressed "sincere regret" for the way in which the United States had acquired the Panama Canal Zone, he was impressed by many of the reforms passed under Wilson. Roosevelt made several campaign appearances for the Progressives, but the 1914 elections were a disaster for the fledgling third party.[306] Roosevelt began to envision another campaign for president, this time with himself at the head of the Republican Party, but conservative party leaders remained opposed to Roosevelt.[307] In hopes of engineering a joint nomination, the Progressives scheduled the 1916 Progressive National Convention at the same time as the 1916 Republican National Convention. When the Republicans nominated Charles Evans Hughes, Roosevelt declined the Progressive nomination and urged his Progressive followers to support the Republican candidate.[308] Though Roosevelt had long disliked Hughes, he disliked Wilson even more, and he campaigned energetically for the Republican nominee. However, Wilson won the 1916 election by a narrow margin.[309] The Progressives disappeared as a party following the 1916 election, and Roosevelt and many of his followers permanently re-joined the Republican Party.