There's no reason this couldn't happen. States have great latitude to determine their own election laws, including how they allocate electoral votes or elect federal offices. Nebraska and Maine can split their electoral votes. Georgia requries 50% + 1 for US Senate and Governor instead of a plurality, and will have a runoff election if no candidate gets a majority in the general election. Ranked choice would just be another method. The problem is that the two ruling parties have very little incentive to introduce this.