“Considering the result was 52 to 48 the election was close.”
Not as close as you think. The polling was 52-48 the other way, so an 8 point swing. Also, 5% is usually considered, pretty much a landslide.
5% is usually the margin or error in European polls.
Margin of error is called: close.
Let’s compare that to what is projected for Sunday, for contrast.