Democratic U.S. Sen. Amy Klobuchar remains hugely popular in Minnesota and has a hefty lead over Republican Kurt Bills, according to a new poll.

A new survey by Public Policy Polling showed Klobuchar with 55 percent compared with 29 percent for Bills, a first-term legislator and public school teacher.

The polling company declared it one of the most "boring" races the company sampled.

"Barring an unforeseen scandal, this race is over," said Dean Debnam, president of Public Policy Polling.

The polling company said the only intrigue is whether Klobuchar's margin of victory will be closer to 20 percent or 30 percent.

There is some hope for Republicans, however. The first-term senator's popularity has slipped since January.

About 57 percent of Minnesotans approve of Klobuchar's job performance and 29 percent disapprove. In January, her approval rating was 61 with 28 percent disapproval.

Democratic U.S. Sen. Al Franken is also in good shape against likely challengers in two years, the poll found.

Franken's approval rating is 50 percent with a 36 percent disapproval. Franken would handily beat likely GOP rivals, according to the poll.

If former U.S. Sen. Norm Coleman opted for a rematch, Franken would win 51 percent to 41 percent. Against former Gov. Tim Pawlenty, Franken would win 52 percent to 41 percent. Franken would defeat Republican U.S. Rep. Michele Bachmann 57 percent to 35 percent.

The polling company surveyed 973 Minnesota voters from May 31 to June 3. The margin of error is plus or minus 3.1 percent.