A shrinking majority of Americans say Robert S. Mueller III’s investigation into Russian election interference and possible links to Donald Trump’s 2016 campaign should continue, according to a poll released Tuesday.

The Monmouth University poll finds 54 percent of Americans saying the special counsel’s investigation should continue, with support down from 60 percent in March and 62 percent last July. A 43 percent minority currently say the investigation should end, though this figure is up six points since March and 10 points since last summer.

The results mirror two other recent polls finding a dip in confidence that Mueller’s investigation is fair toward Trump, although Mueller continues to receive significantly more positive than negative ratings.