While agree it shouldn't happen, there is precedent for it e.g Gordon brown.
It might actually be worse if they called an election now, labour will be in government for some of the most difficult times we've seen in decades and ousted the next election rather than getting a decent run. (A thought I had while typing this)
It's bitter sweet, I want the Tories to fail miserably but by extension, that means I do ... Sigh