I've seen enough general elections to know that the day after the election, or possibly up to the weekend following, is the only time that politicians are at all candid about their defeat and performance in government (if they lost), or the prospects for the future (if they won).
Once a new cabinet is formed, and the whips have got organised, it all descends into being "on message".
As Private Willis says in Iolanthe (1882):
"When in that House MPs divide, if they've a brain and cerebellum, too,
They've got to leave that brain outside, and vote just as their leaders tell 'em to."
The main difference back then is that you were either a Liberal or Conservative - there was no Labour.
Back in 1882, most people wasn't eligible or allowed to vote either. Only about 60 percent of men over the age of 21 could vote.