I can't agree with this in general. I can see the need for these kinds of tactics in the Presidential election, but for Senate? I mean, the Libertarians would probably cacus with the Republicans anyways if they won, and Iowa is pretty solidly Republican anyways (or so I imagine) so what's the big deal here in offering more choices to the voters?
Well the democrats are trying mighty hard to keep Claudia De la Cruz and Jill Stein off the ballots.
Also, I LOVED Bernie Sanders, and I personally think the Democrats did him dirty because they wanted Hilary on the ticket. And look how that turned out.