KENNEBUNK — Residents in Regional School Unit 21 on Tuesday approved the district’s $35.9 million budget for 2012-2013.

In total, voters in Arundel, Kennebunk and Kennebunkport approved the budget, 663-302, according to Kennebunkport Town Clerk April Dufoe.

Arundel residents voted 130-82 against the budget, while voters in Kennebunk and Kennebunkport approved it, 399-137 and 182-35, respectively, Dufoe said.