On May 10, the Vermont legislature passed Senate Bill 86, the omnibus election law bill. It moves the petition deadline for independent candidates, and the nominees of unqualified parties, from June, to August. The presidential petition will always be due August 1. The deadline for independent and minor party candidates for other office will be five days before the primary. In 2014, that deadline will be August 7, and the primary will be August 12.
Assuming the Governor signs the bill, the only states that have an independent presidential petition deadline earlier than July are Illinois, New Mexico, North Carolina, and Texas. Illinois, New Mexico, and North Carolina have June deadlines. The Texas statutory deadline is not settled, and is entangled with various lawsuits on redistricting which also affect primary dates.
The Vermont bill also moves the primary from late August to mid-August. It takes effect immediately.