According to the survey, 65 percent of the respondents (82 percent of Democrats and 43 percent of Republicans) support the idea of appointing a special prosecutor to investigate the contacts, while 32 percent believe that the Congress is "capable of handling the investigation itself."
A total of 32 percent believe that Russia interfered in the US presidential election, which is 8 percent higher than in January, the poll showed.
On March 1, the Washington Post reported that US Attorney General Jeff Sessions spoke to the Russian ambassador twice last year while he was a US senator and part of Trump's campaign despite denying any contacts with the Russians at his confirmation hearing in January.
In February, US National Security Adviser Michael Flynn resigned amid media questioning his alleged ties to Kislyak, with whom he purportedly have discussed sanctions against Russia, a claim that Russian Deputy Foreign Minister Sergei Ryabkov denied.