Digital signature on PDF file

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Good day. I live in Nicaragua. I have an absentee ballot for Denver, Co. I need to sign the document to sent electronically or by email. (says it is easy) NOT for me. How do I get my signature and date back into the file so I can send. Thank you. I will need step by step, Please

 

How to Electronically Sign PDF Documents Without Printing and Scanning Them

Adobe.com > Digital Signatures in a PDF