Can I self-publish a book with Amazon Kindle and a traditional publisher?

I am wondering if I can self-publish a book I have completed with Amazon Kindle and a traditional publisher like Graywolf Press simultaneously.

You see I entered this book into a few first book prizes where if I win they will give me a publishing contract and publish my book but I have to wait several months to know if I won and if I did then I have to wait a year for them to publish it in paperback. So in order to save time I was wondering if I can self publish it with Amazon first and also with a traditional publisher. Do I have to revoke my Amazon Kindle e-book if a traditional publisher accepts it?

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