The Utah state elections office has this registration tally as of July 18, 2017. The percentages: Republican 48.30%; Democratic 11.62%; Independent American 1.71%; Libertarian .85%; Constitution .35%; United Utah .003% (40 registered members); independent and other 37.17%.
Just prior to the November 2016 election, the percentages were: Republican 48.40%; Democratic 11.39%; Independent American 1.41%; Libertarian .81%; Constitution .33%; independent and other 37.66%.
These figures are for active voters. A handful of states also keep track of inactive voters, but traditionally B.A.N. doesn’t use those figures.