Harry Reid has announced that he is retiring from the Senate, and will not run for election in 2016. Supposedly it has nothing to do with his serious facial and eye injuries he suffered in January of this year, However, one of the reasons he does lay out is that of his race--he is white--and that it would have soaked up money needed in other battleground states. The likely Democrat to run in his place is an Hispanic--Catherine Cortez Masto, the state’s former attorney general.
I can't find anything about Masto's religious background, but it may be a significant issue. Reid was a member of The Church of Jesus Christ of Latter-Day Saints ("Mormons"). Although Mormons have largely migrated to the Republican party since the 1970's and 1980's, I suspect that he still received a disproportionate share of the Mormon vote over what a Democratic candidate would receive. Some of those voters may now vote Republican.