On average during election years, the pound has a sharp selloff beginning around June 15 - June 20 during election years that lasts the remainder of the year. There has been plenty of volatility in currencies and equities this year because of the virus reset, and this volatility can continue to year end.
The target shown is just a minimum target, however a portion of the original short could be held until the end of the year and stops adjusted to break even once this target is satisfied.