French Foreign Affairs Minister Laurent Fabius (L) and U.S. Secretary of State John Kerry speak as they arrive for a meeting at the French Foreign Affairs Ministry in Paris on March 7, 2015.
Photo by Etienne Laurent/Pool/Reuters

Poll: 71% say Iran deal won’t make a real difference in preventing bomb

Most Americans believe that a nuclear deal with Iran would not make a real difference in preventing that country’s production of a nuclear weapon, according to a new NBC/Wall Street Journal poll.

Seventy-one percent of Americans say that the nuclear negotiations, which are backed by the Obama administration and strongly opposed by most Republicans, will not make a real difference in affecting Iran’s potential production of a nuclear weapon. About a quarter of respondents — 24% — disagree.

RELATED: Obama: No Iran deal without stringent inspections

Democrats are more optimistic about the deal, with about a third believing that it would be effective in preventing the production of an Iranian bomb, compared to just 11% of Republicans who say the same. But majorities of Americans from all political parties — 58% of Democrats, 72% of Independents and 86% of Republicans — think that the deal would not make a major difference.

The new numbers come as all but seven GOP senators penned a letter to the Iranian government warning them that Congress could undo any deal negotiated by the Obama administration.

This post originally appeared on NBCNews.com.

Iran and Polling

Poll: 71% say Iran deal won't make a real difference in preventing bomb