Churchill also saw his ratings drop

At American Future, , you can read a little bit of lost history about Churchill's sagging ratings in the third year of war. During a three day debate, Churchill acknowledged problems with the war -- big problems:

We have had a great deal of bad news lately . . . and I think we shall have a great deal more. Wrapped up in all this bad news will be many tales of blunders and shortcomings, both in foresight and action. No one will pretend for a moment that disasters like these occur without there having been faults and shortcomings. I see all this rolling towards us like waves in a storm. . . .

Nevertheless, his vision and (I would guess) Parliament's knowledge that they faced an implacable enemy, enabled him to obtain a Vote of Confidence. It's a great story.