“Do you feel it is important to hold your Congressman or Senator responsible for the Iran deal?”
No. Only one Democrat is in any re-election difficulty as the result of her vote for the Iran deal — Debbie Wasserman Schultz — and her opponent is a far left nutcase who just happens to have opposed the deal. Several Democrats who opposed the deal are in trouble, though.
“at this stage will result in no change in Iran’s nuclear capabilities”
I didn’t really support the deal but it did result in pushing off Iran getting nuclear weapons from just a few months to over ten years. That was a big change and it is for the better.