What could have happened to make him change his allegiance so suddenly?

Now the cause is dead, but the type of men who made it great once can't change their allegiance.

Of course, to gain life you must change your allegiance.

I had completely failed in my plea for her to change allegiance.

Members may change allegiance on a number of occasions during their tenure.

A man may change his tribal allegiance but still be upright.

You don't have to change your political allegiance to change bad policies.

Time to change his public allegiance, and risk the brand of treason.

Do you think I do not know there could be good reasons for a man to change his allegiance?

This led to an offer of promotion into the Spanish army, but he refused to change his allegiance.