I had a (very) quick scan, there are definitely duplications, but indications would be that they are not directly by the residents themselves - rather the duplicates tend to be where a resident has completed the tickbox form the opposition group have been getting folk to sign, and the same form has been submitted more than once.
There are also a number of other errors in their bulk submissions.
Examples:
170021_DPP-Objects__LRep_-_A_Scott-1461161.pdf and 170021_DPP-Objects__LRep_-_A_Scott-1463054.pdf are two separate scans of the same completed form. The handwriting is identical but the redaction of the signatures is different, indicating it was scanned, modified and submitted twice.
170021_DPP-Objects___LRep_-_A_Stewart-1477420.pdf No checkboxes ticked, therefore no concrete objection, plus also potential duplicate of 170021_DPP-Objects___LRep_-_A_Stewart-1477423.pdf (although this could be a husband/relative at the same address with a forename beginning with A). In both cases, the name submitted is Stewart whereas the actual resident's name is Stuart.
170021_DPP-Objects__LRep_-_A_Duncan-1470391.pdf submitted claiming to be on someone else's behalf, which is invalid, AFAIK. Also a duplicate of 170021_DPP-Objects__LRep_-_A_Duncar-1470388.pdf, which has been incorrectly entered as "A Duncar", instead of "A Duncan".
That was in a 30 second check of 4 potential groups of duplicate names, where 3 of those groups showed the errors above. That doesn't suggest a lot of confidence in the quality of the data inputting of these forms (by the opposition group directly or by the council - whoever created these records).
Disclaimer: i am neither for nor against the proposed stadium location, but shoddy handling of information gets my goat every time.