just to clarify for those unclear...

this graphic they're using is bollocks. media claimed the tories had a 13 seat majority, but that only includes the 8 from the irish conservatives. in fact, they only had a 5 seat majority (including the speaker). but, then the guardian goes and daftly places the irish conservatives on the left, as though the irish cannot figure it out or something.

the tories have currently lost a net of 11 seats, but the irish conservatives have gained 2. that means they've lost a total of 9. the magic number is 13. if the irish numbers hold, that means you need to see the british at -15 or greater, which is still plausible.

otherwise, the tories will be able to form a government with the support of the irish conservatives, and it will probably be stable enough.

https://www.theguardian.com/politics/ng-interactive/2017/jun/08/live-uk-election-results-in-full-2017