Bennet collecting petitions

According to the Pueblo Chieftain, Sen. Michael Bennet is starting a petition drive to get on the August primary ballot.  This sounds like a smart move to me.  Yes, he got around 43% of the caucus night vote, but what will ultimately determine his spot on the ballot is the vote at the state assembly in May.  Early reports from the county assemblies suggest that Romanoff is picking up big numbers there.  I'm hoping to get some hard numbers there, but my guess is that the Romanoff caucus/assembly-goers are just more hard core and more willing to show up at the multiple stages of this whole nomination process.  It's certainly conceivable that Bennet could end up below 30% by the state assembly, which would require him to petition onto the ballot.