My predictions:
Christine Quinn vs. John Catsimatidis: Safe D
Bill de Blasio vs. John Catsimatidis: Safe D
John Liu vs. John Catsimatidis: Safe D
Bill Thompson vs. John Catsimatidis: Safe D
Christine Quinn vs. Joseph Lhota: Safe D
Bill de Blasio vs. Joseph Lhota: Safe D
John Liu vs. Joseph Lhota: Safe D/Likely D
Bill Thompson vs. Joseph Lhota: Likely D
Christine Quinn vs. Ray Kelly: Toss-up, Tilt D
Bill de Blasio vs. Ray Kelly: Pure Toss-up
John Liu vs. Ray Kelly: Lean R
Bill Thompson vs. Ray Kelly: Toss-up, Tilt R
I dont think any race would be Tilt-R or more unless Bloomberg or Giuliani were the nominee or possibly against John Liu. This is a city that went 81% for Barack Obama, making it around D+30.