Donald duke unsure of platform for presidency as he formally declares intention

I think there may be some confusion here!

Donald Duke is a former Governor of Cross River State in Nigeria, not a former President of the United States. He has never held the office of President in the United States.

Additionally, I couldn't find any recent news or information about Donald Duke declaring his intention to run for presidency in any country, let alone the United States.

If you meant to ask about a different person or situation, please feel free to clarify or provide more context!