The last time a State didn't use a vote was in the election of 1876 when Colorado was admitted as a State too late as to prepare for a vote in the Presidential election. There's no reason to think the result would've been different in that case and it's doubtful we'll see a State ever have the legislature elect the Electors save in a similar situation.
On the other hand, if the result was different, then Tilden would have won the whole election.
Colorado was solidly Republican in 1876 and the closeness of the election is what led to Colorado being admitted slightly early.
