They said Bill Clinton was that popular as well. The numbers they cited though were only on his handling of the economy, which was good at the time. Overall he was not that popular and Gore tried like hell to distance himself rather than embrace him.
The 47% or so they cite in this poll jibes with the election results. It WAS a referendum on Zero.
The downside to the GOP winning Congress back in 1994 is that they made possible the better economic environment that Bubba took credit for (which helped save him for 1996).