With six candidates appearing on the ballot, Grass Valley voters have no shortage of choices for representation on the city council. Two incumbents, Mayor Jan Arbuckle and Councilwoman Lisa Swarthout, are defending their seats from challengers Jim Firth, Justin Gross, Howard Levine and Patricia Tureaud. The pack is vying for three open seats, as Councilwoman Yolanda Cookson is not seeking re-election. The top three vote-getters will secure the open council seats, taking office at the governing body’s first meeting in December. Since 2007, Grass Valley’s general fund budget has declined from $12.5 million to approximately $10 million today, resulting in …