Why would they lose the next election ? Other parties now have the stigma of showing they don't give a guano about the public's democratic opinion, and that will stain their reputation for decades to come.
Meanwhile this government has got us out of the clutches of European federal control. Might even get a deal, but no-deal will be fine.
Whilst with hindsight they haven't performed perfectly regarding the pandemic, they are seen to be doing as well as should be expected when tackling an unknown situation.
The biggest problem is how the country is ever going to trust a social left wing party in power again. We may be doomed to permanent right wing politics (as seemed the case under Tony Blair).
I think your question isn't valid, it's set on a quagmire foundation of wishful thinking.