Curried Chicken Salad

From Ann Romney's cookbook. Tastes best if made the day before. I made this January 2014 with some leftover rotisserie chicken. It was good but not great. I think more chicken and less curry might have helped. I used more celery and grapes then it called for (good). I am hoping it will taste better tomorrow as the original recipe said! I also substituted some plain yogurt for some of the mayonnaise.