Voting in a democratic election

Q: Can mufti saheb provide guidance on the following two questions regarding taking part in democratic elections: 

​1. Is voting in a democratic election regarded as a religious obligation (such as Amr bil Ma'ruf wa Nahy anil Munkar), and is it correct to cite Surah Ali imran (3:110) as a proof for the permissibility or necessity of voting? ​

2. From a Fiqhi perspective, is a vote regarded as a form of shahadah (testimony) where the voter bears witness before Allah Ta'ala regarding the candidate's character and eligibility of leadership?

Making masah on the plaster of the deceased when giving him ghusl

Q: After ghusl was completed, it was discovered that a large plaster was on the buttocks of the deceased. Blood was visible on the plaster. 

The Aalim present said the ghusl was done, and there is no need to remove the plaster and wash the area underneath, because if the plaster is removed, blood might come out. So it was left as-is. 

When the body was being placed in the grave, it was seen that blood had come out from that area as it soaked that area of the kafn. 

Was the ghusl was completed - was the Aalim correct?