Re Labour v Tories atm.
In my opinion Labour are shifting left and more authoritarian at present. Not much is suggesting different. The left have control of the NEC. Momentum didn't get as many of their candidates through selection but they do have an issue with not selecting women as their candidates. You are still seeing threats to deselect 'blairites' too.
By contrast the Conservatives went full on UKIP and authoritarian and have hit a massive problem which the election showed up.
There are no more votes to be found on the right. The Tories need younger voters and they need women. By definition they are more liberal and more left leaning. So they will have to go back that way or face oblivion.
Certainly Brexit will continue to throw up political realities that they will be forced to confront. Hence a slow row back is somewhat inevitable.
Unless there is a leadership challenge (Apparently the 1922 committee are only a couple of letters away from triggering one)
In which case all bets are off
A leadership challenge will do one of two things: force the party more liberal or force it even further right again.
The parliamentary party is more liberal because they know the death of the party will be caused by going further right - they'll never win the youth over. The grass roots is just basically old rich white male authoritarians now so they will naturally favour someone from the right. A leadership battle will be about Tory MPs scrambling to knock out the most extreme candidates to stop it being decided by the grassroots as far as possible.
For now, I think its a case of trying to stop Labour drifting anymore authoritarian leaning and trying to ensure the conservatives do see that the ukip vote is a dead end.
That means making noise. Lots of it. Apathy is what got up here and the loud mouths are driving politicians out of fear. Shout about what you want and what is important - dont just be critical be constructive. Don't let them take your support for granted. Be entitled!
Where the centre of gravity of every party now stands is NOT fixed at all. They are moving more than they have in a long time.
FWIW as it stands I don't see another GE on the cards. Yet. Things are unstable and could suddenly change but right now, there is an opportunity to make a fuss.
Do whatever will get you noticed.