[Bob]

Did the original method require elections by the state legislatures or was that a matter left to each state to decide for itself? Sorry, I don’t have a copy of the Constitution handy to check.

[Repeal The 17th]

“...chosen by the Legislature thereof...”

[DJ Taylor]

“Sorry, I don’t have a copy of the Constitution handy to check.”

Here you go. Use mine:
http://www.archives.gov/exhibits/charters/constitution_transcript.html

[Sherman Logan]

Constitution says “chosen by the legislature” of each state.