[joeysteele]

By 2020, we have no idea what the voters may be looking for as to a UK out of the EU, we have no idea what errors this govt is going to make on domestic issues either.

Sadly but a fact,a fair number not able to be measured, of those in their late 70s, 80s and even 90s, who voted in the referendum and in the May 2015 election for this govt, will not be here any longer.
Those aged 15, 16, and 17 now, who were denied a vote in the referendum by this govt, will also then be able to vote too.

The electorate, or the majority of it, may well be looking for something entirely different from the status quo and 10 years of Conservative dominance in govt again by 2020.

Also depending on what happens in Scotland and this EU vote,if Scotland is heading for another independence referendum.
Then it is felt that this govt has not only helped create the scene of the UK leaving the EU but also the break up of the United Kingdom too, then the possible backlash at that time against this govt could be almost unprecedented.

Who knows, however very unwise to predict how anything will go in just over 3 and a half years time.
Labour is near always assured of 27% of the vote,that will still leave them with around 200 seats, not a chance to be obliterated.