Basically, you'll need to know the usual questions, know the reasons behind the questions, know what you want to say, and watch successful politicians to notice the techniques they use to exercise a subtle control over their press conferences, no matter what questions are asked.

There are generally three types of interview:- Free form - difficult to prepare for, attractive general questions Structured - skills based - practice talking yourself 'up' Structured - competency based - answers using the STAR method (Situation, Task, Action, Result) If you have an idea of the type its easier to prepare for. Also academic interviews are different altogether. I've a fair amount of recent interview experience, let me know if you have any questions :)