The Nevada Secretary of State has released the February 2015 registration tally. See it here. The percentages are now: Democratic 39.64%; Republican 34.46%; Independent American 4.71%; Libertarian .82%; independent and miscellaneous (including Green) 20.37%.
By comparison, in October 2014 the percentages were: Democratic 40.11%; Republican 34.96%; Independent American 4.71%; Libertarian .81%; Green .19%; independent and miscellaneous 19.21%. Thanks to Doug Goodman for the link.