The new North Carolina ballot access law for parties says a party is on the ballot if its presidential nominee was on the ballot in at least 35 states in the last presidential election. The State Board of Elections is now working on a procedure on how a party should document this. The State Board has already been in touch with the North Carolina Green Party about this. The new provision has no impact just now on any other third party, but Greens can use this provision because Jill Stein was on the ballot in November 2016 in 44 states.
The new law has no impact on the Libertarian Party at this time, because the party was already on the ballot under the alternative provision that keeps parties on the ballot if they got at least 2% for either president or governor. In November 2016 the Libertarian Party got 2.77% for President and 2.19% for Governor.