About two-thirds of Americans say a special prosecutor should investigate contacts between Russians and Trump campaign associates, according to a new CNN/ORC poll, and 55% say they are at least somewhat concerned by reports that some connected to the Trump campaign had contact with suspected Russian operatives.

However, the steady stream of news about investigations into those contacts doesn’t appear to have affected President Donald Trump’s approval rating, which ticked up only one percentage point — 44% to 45% — from January.

Concerns about the reported contacts are closely tied to partisanship, with 71% of Democrats saying they are “very concerned” about it while 54% of Republicans say they have no concerns “at all” about the reports.