Next week’s mayoral election in Urbana marks Rex Bradfield’s third bid for the office. He’s twice lost to current mayor Laurel Prussing (in 2009 and 2013), but this time, the Republican engineer and land surveyor faces Democratic Alderwoman Diane Marlin. Bradfield says if he’s elected next week, his top priority is expanding Urbana’s tax base.  He says there’s been no stability in what developers can expect when they pitch projects to the city council in recent years.