Throughout the war in Iran, public opinion has remained remarkably stable. Shortly after the first attacks in early March, 40% of voters favored the attack on Iran, and 42% approved of the president's handling of the situation in Iran in general.
This week, 40% of voters favor the attacks on Iran, and 41% approve of the president's handling of the situation in Iran in general.
Republicans overwhelmingly approve on these issues, while Democrats take the opposite stance.

Looking Back
Support for the attacks was as low as 35% in April and as high as 43% in March. On the other hand, disapproval has been above 50% since mid-March, peaking at 61% in April.
President Trump's handling of the situation looks similar during that time frame: other than a lone high of 46%, approval has stayed between 35% and 44% during the entirety of the conflict, while disapproval has stayed above 50% since mid-March, peaking at 63% and hitting 62% twice.
The Effects
Despite little shift in the numbers, the consequences from the war are economically devastating for Republicans. Thirty-five percent (35%) approve of the president's handling of inflation, and the number reporting that they are better of from 4 years ago has reached a new low.