Newly published surveys from Public Policy Polling and Rasmussen Reports show incumbent GOP Sen. Richard Burr extending his lead over both Cal Cunningham and Elaine Marshall as the Democratic rivals prepare for their June 22 runoff.

More interesting, however, is this little tidbit from PPP (HT: The Campaign Spot):

Seventy-four percent of voters in North Carolina are unsure of their opinion of Cunningham and 62 percent of Marshall. This is an increase from 66 and 56 percent respectively in the week following the primary election.

PPP goes on to note that “Voter turnout is typically lower in run-off elections as voter interest decreases.”

Maybe so, but when more than 60 percent of voters have no opinion about candidates for statewide office two weeks before an election, that hardly inspires confidence in their ability to rouse public support later on.