Mayor Gina Ortiz Jones — who spent significant political capital calling for a pause in talks to develop a downtown Spurs arena — still hasn’t said whether she’ll campaign against Bexar County’s proposal to raise the visitor tax to 2% to help pay for the proposed facility. The county vote is a critical one. If it fails, the term sheet the city last week agreed to with Spurs Sports & Entertainment (SS&E) would become void, setting local leaders back to square one when it comes to negotiating for a $1.3 billion NBA arena at Hemisfair.