Your chance to quiz John McCain

Do you have a question for presumptive Republican nominee John McCain?

(CNN)–Now you can be in "The Situation Room!" Senator John McCain, Republican presidential candidate, will be a guest Friday and you can ask him a question yourself. What issues matter most to you? Do you want to know more about what kind of president he would be? Submit your questions today, and be sure to keep them clear and concise. We’ll pick the best ones to be used on air.

Click here to submit your iReport