"Our campaign polling indicates the race is much, much closer than the results of this poll," Maloney campaign manager Seth Wimer said.
Wimer said the Tomblin administration has passed the largest budget in West Virginia history and has failed to challenge "the job-killing policies of Barack Obama."
"We believe any poll that suggests voters are rewarding him for such a poor track record to be questionable at best," he said.
State GOP Executive Director Chad Holland said Repass' polls have been wrong in the past.
"Last year, on Sept. 2, this same firm showed Tomblin ahead by 16 (percent)," Holland said. "If they were that far off the mark a month from the election, it's no surprise that they are so far off now, six months before West Virginians go to the polls."
That poll, conducted for the state Chamber of Commerce, was done entirely online. The current poll used a different methodology, using live callers contacting a demographically representative portion of the state population.
But Holland said the polling firm's work with organizations like the Chamber of Commerce, which endorsed Tomblin last year, further taints the results.
"An out-of-state polling firm whose clients include the state of West Virginia and the lobbyists and special interests that support Earl Ray Tomblin isn't exactly an honest broker," he said.
Repass, a West Virginia native, runs his company from a corporate office in Cincinnati. The polling, however, was conducted with the use of his firm's data collection partner, McMillion Research LLC, in Charleston.
Tomblin campaign spokesman Chris Stadelman said the poll results show state voters are connecting with Tomblin's "more jobs, lower taxes" mantra and paying attention to the decisions he has made in office.
"He enjoys broad-based support from West Virginians because that's how he has led - working with Democrats and Republicans to pass comprehensive mine safety and Marcellus Shale drilling legislation, and keeping our families safe by eliminating texting and driving, shutting down pill mills, and creating an in-home health care registry to protect seniors," Stadelman said.
"Voters also know he has successfully battled the EPA to save West Virginia jobs and will continue to stand up for our coal industry in the future."
The poll also surveyed Democratic voters regarding the party's six-way Supreme Court race. Democrats will nominate two candidates for the general election.
Leading that race were incumbent Justice Robin Davis followed by challengers Tish Chafin and Jim Rowe. Davis was favored by 31 percent of those surveyed; Chafin was 4 points behind with 27 percent; and Rowe was third with 22 percent.
There was a big gap between those three and the others. Wood Circuit Judge J.D. Beane was favored by 10 percent; New Martinsville attorney H. John Rogers by 7 percent; and state Supreme Court clerk Louis Palmer by 6 percent.
However, 44 percent of registered Democrats surveyed said they were still undecided ahead of next Tuesday's vote. That large number of undecided voters means the race could turn in any one of the candidates' favor on Election Day.
"We can look at this to say this is a very close Supreme Court race," Repass said. "It's fairly tight among those three."
The two Republicans in the Supreme Court race, Jefferson Circuit Judge John Yoder and state Supreme Court clerk Allen Loughry, face no opposition in the primary.
Contact writer Jared Hunt at jared.h...@dailymail.com or 304-348-5148.