85-year-old Democrat Diane Feinstein resisted calls to retire. Now she's about to take center stage in the biggest partisan battle of the year — the next Supreme Court justice. Politico reports Feinstein has shrugged off a chorus of calls from within her party to step aside, arguing that her seniority and past achievements make her better qualified to represent California than a challenger decades her junior. Now she's going to have a chance to prove it.