"It should be computer-driven," Manchin said. "There shouldn't be a politician driving redistricting."
Both candidates also called for the return of U.S. troops from Afghanistan and Iraq.
"We cannot be the policemen of the world anymore," Baber said. "We're literally acting like Roman emperors. It's time to bring that money home and rebuild here."
Manchin said American troops should have exited Afghanistan immediately after U.S. Special Forces killed Osama bin Laden in May 2011.
"That would have been the perfect time to get out," Manchin said.
Manchin also criticized Sen. Rand Paul, R-Ky., who's running television ads attacking Manchin and other senators who voted against legislation that would have cut off foreign aide to Egypt, Pakistan and Libya.
Manchin said Paul's bill went too far, creating the potential to stop aid to "our strongest allies," including Israel.
The bill, which was voted down, prohibited U.S. assistance to any country that housed a U.S. diplomatic facility that was attacked. Critics said the bill gave an incentive for terrorists to attack facilities in countries allied with the U.S.
"Rand Paul is a demagogue playing games," Manchin said. "Everything that's wrong with Washington is what you saw Rand Paul do."
Manchin brought a packet of memos and letters about Paul's legislation to Friday's meeting with Gazette editors, speculating that Raese would bring up the bill.
"I was going to tell him to deal with the facts," Manchin said.
Before the meeting started, Baber crossed paths with Raese in the Charleston Newspapers' parking garage, Baber said.
"I went to shake his hand. He would not shake my hand," Baber said.
At an Oct. 2 debate in Shepherdstown, Baber repeatedly came to Manchin's defense, after Raese tried to link Manchin to President Obama. At the end of the debate, Baber used an expletive to describe Raese's tactics.
Baber and Manchin said Friday they were surprised Raese left the meeting with Gazette editors before it started.
"How can you elect a man who's incapable of coming to a forum?" Baber asked. "We need people who sit down and talk to each other."
Raese told a Gazette editor that he would not stay in a room with Baber because Baber insulted him at the Shepherdstown debate. Raese said he did not have a problem with Manchin being at Friday's meeting.
"I guess he thinks because Bob and I agree on some things there's some collusion going on," Manchin said.
The Gazette contacted Raese's campaign for additional comment after Friday's meeting, but Raese did not return phone calls.
Reach Eric Eyre at erice...@wvgazette.com or 304-348-4869.