Three candidates for Warren County Executive all seem pleased with the county’s low tax rate, which has gone 15 years without an increase.Some critics say keeping the tax rate unchanged is not a positive because it doesn’t allow for growth and “progress,” but the candidates at the Southern Standard/WCPI forum Monday night don’t subscribe to that logic. “Tax increases are not always a way to fix a budget,” said Jimmy Haley, who is looking to transition from McMinnville mayor to county executive. “If you study the budget, you understand about growing revenue through other sources and how a take hike is not always the answer.