Although New Hampshire repealed its prevailing law back in the mid-1980s, the State Senate is now considering a measure that would require contractors on state public works projects to pay prevailing wages to workers. It is currently being met with resistance from some trade union representatives.
See here for more information: https://www.nhbr.com/March-1-2019/Construction-industry-unions-duel-over-state-prevailing-wage-bill/