The Philadelphia Inquirer praises the efforts of the New Jersey Assembly to extend and improve its Clean Elections pilot program, and urges the Senate to approve the changes the Assembly proposes. Following the first use of the program in 2005 a number of changes were proposed - should the Senate agree with the Assembly's assessment, the next cycle of the project will require eligible candidates to collect a smaller number of qualifying contributions, and there were be a greater effort at public education on the program. Concludes the Inquirer:  Eventually, "clean" elections should be extended statewide, as in Arizona and Maine. Beyond reducing the influence of campaign donations on decision-making, cutting the cost of running for office would diversify the candidate pool and help bring missing voices to Trenton.That really can't happen, however, until public financing applies to the party primaries, when races in many districts are decided.For now, though, Roberts' bill is a good step along the way.