Either the D or the R is going to win the election.
A single vote for R nullifies a single vote for D.
A single vote for L does NOT nullify a single vote for D and therefore results in "a vote for Hillary."
Does a single vote for L nullify a 1/2 vote for the D and a 1/2 vote for R? Might still be worth it.
Truth be told, I haven't looked at any of the L candidates yet, or any candidates actually.