The public by 57-39 percent in a new ABC News/Washington Post poll also says it’s more important for the government to investigate possible terrorist threats than for it to protect privacy rights – a substantial margin, albeit the narrowest in polls since 2002.

A plurality thinks Snowden’s disclosures have harmed national security (49 percent say so, 37 percent not, with the rest unsure). And 53 percent now support charging him with a crime, up from 43 percent last month, with a 13-point rise in “strong” support. People who think Snowden has harmed security are far more apt than others to favor criminal charges.

At the same time, this poll, produced for ABC by Langer Research Associates, finds that most oppose the idea of President Obama canceling his planned visit to Russia if that country were to give Snowden temporary asylum.