Can you name a political party, in any part of the world, in the last century that did follow through with their "great message"?
Politicians are PR / sales people. The product work is rarely actually done by them.
If mortgage interest rates on average went up, the politicians will blame the greed of banks, the international exchanges market, the gravity was higher than normal etc.
If mortgage interest rates on average went down, then that's a great reason to vote that politician in for another term!
People who had suffered through WW2 wanted to feel that there would be some benefit to the common people - 70 years later and the NHS is still one of the most loved institutions in the UK despite being avowedly a socialist endeavour.
NB I am not a supporter of the current Labour Party (AKA "New Labour") but they do deserve a lot of credit for what they did back then.
The nearest example I can see in recent history was the ANC in South Africa since 1994.
Over the last 30 years the GOP has raised government spending far more than the Dems. Consider the Medicare prescription drug plan without any negotiation for lower rates.
It's just redicusly over the top levels of corruption.