Here's a not so bold prediction. The Tories will get their lowest ever share of the popular vote in the next General Election
You want a bold prediction? We are witnessing the death of the Tory Party as we know it. They will drop from the second highest share of the vote since WW2 (and longer but that's not particularly relevant) to their way below their lowest ever (30.7% in 1997)
It's actually quite hard to see how they recover given their voting demographics. In two elections time it is possible that a good chunk of those currently voting for them will be dead, Their policies will even be responsible for a number of those deaths prematurely but their actions during this term of office will be remembered by the vast majority of the voting public, especially in the age groups that they would traditionally target.
Just as an indication of how bad it will be, Labour's worst post war share of the vote was 1983 (Michael Foot, 27.6%).That is their lowest share of the vote and the only time one of the two big parties has polled under 30%. It took Labour another 14 years and 3 more election cycles to get elected and they had demographics on their side
I think the Tories will poll lower than Foot's Labour and demographics will be against them.