On Tuesday, voters in Jackson County rejected a 40-year extension of a 3/8th-cent sales tax by a wide margin.The extension would have helped fund a new downtown stadium for the Kansas City Royals and maintain and repair Arrowhead Stadium.The Royals had planned to pledge at least $1 billion from ownership to help fund a $2 billion-plus ballpark district in the Crossroads that would have received funds from the proposed tax extension. The Super Bowl champion Chiefs had committed $300 million in private money to an $800 million planned renovation of Arrowhead Stadium that would have benefited from the public money.Both reiterated in the lead-up to the vote that the sales tax passing was crucial to keeping the teams in Jackson County and in Kansas City. However, shortly before the vote, Royals Chairman and CEO John Sherman told KMBC he was committed to keeping his team in the metro. The Chiefs’ …