(Photo: City of Henderson)When former Henderson Police Chief Hollie Chadwick went to bed on primary election night, it appeared her quest to unseat Mayor Michelle Romero was for naught. Romero, according to election officials, had garnered just over 50% of the counted vote – enough, if the margin held, to win another four years in office. But days later as the votes trickled in, Romero’s share dwindled to 49.76% – slightly below the threshold t…