The Redding budget referendum is being held today.  Residents will be deciding on a combined $36.3 million budget.  The municipal portion is $14.8 million while the schools are seeking $21.5 million.  It's less than the Board of Ed wanted, but more than this year's budget.  Redding, like other Greater Danbury area towns, is facing increased transportation and special education costs.  The Region 9 budget is proposed at a 3-percent increase.  Redding would pay more than Easton due to enrollment percentages at Joel Barlow High School.