Australia:
Strong republican sentiment, but bitterly divided between Parliamentary republicans (who want a figurehead, with similar powers to the governor-general [the queen's representative], rather then one very powerful person running the country) and the Presidentialised republic (like America). There is little support fro a French type of republic.
All three groups (presidentialised, parliamentary and Monarchists) don't get along well at all. Personally, i'm a parliamentary republican.
Canada: Could a canuck write this?
New Zealand: Whilst republican support is growing, there is still a plurality of support for remaining a monarchy. They have far fewer Presidentialised republic supporters then Australia, but more parliamentary republic supporters. They also tend to like to contradict Australia (one of the reasons for Helen Clarke's success
) and if it looks like Australia won't become a republic anytime soon, I wouldn't be surprised if they do it first.
United
Kingdom: Really bloody unlikely, but consider this to include the possibility of Wales or Scotland or something seperating and becoming a republic. I wonder if this is more or less likely then the UK becoming a republic as a whole...