It was a primarily Democratic legislature, but you can blame the Republicans anyway. Here’s why:
First, the requirements for qualifying to appear on the VA ballot have been in effect since the 1970s. However, even though the law demands 10,000 valid signatures, it has always been up to the individual parties to establish the rules they use to “validate” the signatures, even if they do nothing at all to actually validate them. An Independent candidate running to be a state delegate filed suit because:
Up until this election cycle, the VA Republican Party merely required candidates submit the required 10,000 signatures and never bothered to validate them. But because of this pending suit (Osborne v Boyles, btw), the party decided to err on the side of caution and this time they sent out notices to all the candidates in October that they would need to collect 15,000 signatures to ensure that at least 10,000 of them were valid, which would get them out of actually having to sift through them one-by-one. Any candidate who brought in at least 15,000 signatures would be presumed to be in compliance and automatically certified by the state party.
Romney came in with well over 15,000 signatures and was automatically qualified by the party. Paul came in with just over 14,000, but because he didn’t meet the party’s arbitrary threshold of 15,000, every one of his signatures was examined. Once he was found to have had at least 10,000 valid signatures, he too was certified.
Perry & Gingrich each came in with around 11,000 signatures, and a line-by-line examination revealed that each had in excess of 1,000 invalid signatures, therefore disqualifying them.
In every prior election in every prior year, a submission of 11,000 signatures wouldn’t have been examined by the party, and the candidates would have been presumed to be in compliance and certified by the party to be on the ballot.
So the only people Perry & Gingrich have to thank for not qualifying to appear on the ballot are themselves and the Republican Party of the Great State of Virginia.