Excerpt - LITTLE ROCK - Taking steps to keep one of its own out of the Legislature, the Democratic Party of Arkansas changed its rules Saturday and refused to certify former state Rep. Dwayne Dobbins for the November general election ballot. At their state convention, Democrats approved a rewrite of party rules to disqualify any person who has resigned from public office as a provision of a plea agreement to avoid felony prosecution from being certified for the ballot. Dobbins, of North Little Rock, was the only candidate to file this spring for the House seat he resigned in 2005...