Perhaps, they took a small sampling of names and found that more than 10% of the names were not valid.
In any case, Rick Perry should know that you need more than a 10% overage on a petition.
Do you think 400 people in Sheila Jackson Lee's district have ever heard of Rick Perry much less would sign a petition for him?
Sampling shouldn't work on a petition...what if they got the wrong sample?
We recently had a recall petition on city councilmen...it ended up in FEDERAL Court and there were more than required signatures. It took longer to validate 350 signatures than the thousands in VA took...I don't know how many worked on it.