free-for-all 　1 飛び入り自由の競技[競走].
　　　　　　　　　2 乱戦，乱闘(騒ぎ).

1. Unlike in Japanese elections, where two or three powerful parties nominate a candidate, in
　　American elections anybody can join no matter how unknown they are, so the elections
　　are often free-for all's between 15 or 20 candidates.

2. As soon as the store opened there was a free-for-all between hundreds of shoppers eager
　　to take advantage of the special sale.

3. The Chinese government strictly controls the media because they fear the kind of free-for-all 　　　exchange of information that occurs in countries 　　like the U.S. , Great Britain, or Japan.