Hi @Balasaheb Molawade ,
You are conflating two separate offerings. The worldwide postal code boundaries are available through the API @Ricky Brundritt helpfully gave you code to demonstrate. This data source is US election boundaries specific to the US and would not apply to a multi-country data set.
If you are looking for Canadian & German election boundaries, you could get these yourself from those governments if they make them available, but we do not have them as a public dada source in Bing Maps for Enterprise.
Sincerely,
IoTGirl