シュレースヴィヒ＝ホルシュタイン問題
The party truce ended in 1864, with Tories outraged over Palmerston's handling of the territorial dispute between the German Confederation and Denmark known as the Schleswig-Holstein Question. Disraeli had little help from Derby, who was ill, but he united the party enough on a no-confidence vote to limit the government to a majority of 18—Tory defections and absentees kept Palmerston in office. Despite rumours about Palmerston's health as he passed his eightieth birthday, he remained personally popular, and the Liberals increased their margin in the July 1865 general election. In the wake of the poor election results, Derby predicted to Disraeli that neither of them would ever hold office again.