According to the poll, 59 percent of adults, including 41 percent of Republicans and 79 percent of Democrats, agreed that “Congress should launch an independent investigation into communications between the Russian government and the Trump campaign during the 2016 election.”

That compares with 54 percent of all adults, including 30 percent of Republicans and 81 percent of Democrats, who felt that way when the poll last asked the question in February. . . .

The Reuters/Ipsos poll also found that public confidence in the executive branch and in Congress has eroded since the Nov. 8 election. Thirty-six percent of Americans said they had “hardly any confidence at all” in the executive branch and 43 percent said they felt that way about Congress. That is up from 30 percent and 37 percent, respectively, who answered that way in a November poll.