Hi,
looks like your poll is “doctored” the dates 28-29 - the 8 is not the same as the 8 below in the scoring. and the 9 is too big.
I realise it’s an old poll and all, but just saying the fonts are different.
It looks OK to me. I think what you’re seeing is very slight optical illusions that make the 8s and 9s look different depending on what characters are next to them in the document. It’s also possible that the software that produced the document does not make all the characters exactly the same size and shape in all parts of the document. But I doubt that anyone “photoshopped” this document—no motive for anyone to do that.