Though Secretary of State Jennifer Brunner (D) and Lt. Gov. Lee Fisher (D) have run statewide and Republican Rob Portman served in the House for a dozen years, voters in a poll released Wednesday largely drew a blank when asked for an opinion about their Senate candidacies.

In a Public Policy Polling survey conducted March 20-21, about 66 percent of respondents said they didn’t have an opinion about Portman, 62 percent didn’t have an opinion about Brunner and 55 percent lacked an opinion about Fisher.

In head-to-head tests, Portman led Brunner by 38 percent to 37 percent, and led Fisher by 41 percent to 36 percent.

The survey counted the opinions of 630 likely voters. It had a margin of error of 3.9 points.