It's going to be another hung parliament. Johnson would have had a much better shot at a majority if he hadn't just converted the Tories to an English version of France's National Front. Polling shows Tories basically wiped out in Scotland and they are going to lose a lot of votes in the commuter belt, which is mostly pretty Remain and not normally big on hard right nationalism.
Dominic Cummings, the greatest political strategist since Nick Timothy (the man who fucked up Theresa May's majority in 2017), thinks they can pick up a lot of northern seats. But as lots of people have pointed out, even in Leave-voting Labour constituencies, most of the Labour vote isn't Leave, so it's not really clear where the votes will come from to overturn most of the Labour majorities. Cummings was reportedly asked by Spads a couple of days ago about what the strategy was to pick up extra seats and where they would be, and he couldn't give any details.
Obviously, Labour's genius strategy of trying to look Leave-y to Leavers and Remain-y to Remainers, while being led by a man who most voters think is useless but his acolytes think is the messiah is going to cost them a shitload of seats too.
So, hung parliament, as things stand at the moment. But if the election happens in November, once the Brexit deadline has passed and Johnson has either had to cave and seek an extension (pissing off the headbangers and making an electoral pact with the Farage fascists a non-starter) or has plunged us into the utter disaster of no deal, he's going to be completely fucked. If he can get an election through before 31 October he can sit tight for 5 years and no-one will be able to touch him, however much damage he's done with no deal, or even if he's gone back on his word and revoked or got an extension.