KEENE, Jan. 24 -- In diners, taverns and student centers across the state yesterday, few minds were changed by Thursday night’s Democratic debate in Manchester . Some voters were still undecided, and those who weren’t only felt more certain about their candidate. Many who watched were skeptical about the debate’s format, and a few were disinclined to participate at all in Tuesday’s primary. “Very blah,” said Ted Tivnan of Manchester . “The substance wasn’t there.” While Sen. Joe Lieberman was making his pitch to a health care forum next door at the Palace Theatre, Tivnan, 55, sat inside the Stage...