WASHINGTON — A poll showed that nearly half of likely voters believed the United States should use military force to prevent Iran from developing a nuclear weapon.

According to the poll, published this week in The Hill, a newspaper that specializes in Congress, 49 percent of respondents stated that the U.S. should use military force, while 31 percent said the U.S. should not use military force and 20 percent of respondents were unsure of a course of action.

In that same poll, 62 percent of likely voters indicated that they were “somewhat or very concerned” about Iran conducting a terrorist attack on the United States, while 37 percent indicated they were not really concerned.

Pulse Opinion Research surveyed 1,000 likely voters on Feb. 2. The poll had a margin of error of 3 percentage points.