Electoral college takes place when the electors from each state which equals the number of representatives of that state.In short, for each electoral vote in this example Arizona, which would allocate 11 electoral votes.
... I'm not an American. So, for me, these two sentences do not clearly give an idea what an Electoral college means. I think it's better if you re-phrase this part that gives a clearer picture to anybody whether he is familiar or not with this system.
For example, this is how Wiki describes Electoral college and anybody can conceive the idea without much difficult;
"The United States Electoral College is the institution that officially elects the President and Vice President of the United States every four years. The President and Vice President are not elected directly by the voters. Instead, they are elected indirectly by "electors" who are elected by popular vote on a state-by-state basis."