Yes, in fact I cant seem to shake the candida off completely due to stress. When you are under alot of emotional or physical stress it increases your cortisol levels. High cortisol can cause blood sugar problems along with vitamin/mineral deficiences and create a better environment for candida.
Ive found high doses of vitamin C is good for stress. Vitamin C is the most important nutrient for the adrenals. I guess it would make sense that the better your adrenals are working, the better you will be able to handle stress.