As a key Senate panel prepares to vote on handling an emerging nuclear deal with Iran, a nationwide USA TODAY/Suffolk University Poll finds overwhelming support for the idea that Congress should have a role in deciding whether the United States supports the final agreement.

Those surveyed say by 72% to 19% — nearly 4-1 — that Congress should have a role.

The findings bolster the view of Republicans lawmakers and some leading Democrats who back a measure that would prohibit President Obama from lifting congressionally-imposed economic sanctions on Iran until Congress has had a chance to review the agreement’s details. The Senate Foreign Relations Committee is scheduled to vote on the legislation Tuesday.