The latest news on this front comes from a really interesting article at Ballot Access News written by the widely-respected election expert and advocate for third party/independent ballot access Richard Winger. Take a look at this excerpt:
Nevada State Senator Roberta Lange (D-Las Vegas) has introduced SB 292. It doubles the number of signatures for a new or previously unqualified party to get on the ballot, from 1% of the last U.S. House statewide vote, to 2%. Also it imposes a distribution requirement for all four U.S. House districts.