When receiving plain messages (MessageHandler) or callback queries (CallbackQueryHandler) the update payload includes the chat object (id, type, etc..)
{'update_id': 696992165,
'message': {'message_id': 1267, 'date': 1589968391,
'chat': {'id': 931365322, 'type': 'private',
In case of Poll (PollHandler) this is not the case (only the question, answers, and info related to the poll question)
{'update_id': 696992167,
'poll': {'id': '5920521737891479577', 'question': 'What is the capital of Ukraine?',
'options': [{'text': 'Rabat', 'voter_count': 0},
{'text': 'Kyiv', 'voter_count': 1},
{'text': 'Luxembourg', 'voter_count': 0}],
'total_voter_count': 1, 'is_closed': False, 'is_anonymous': True,
'type': 'quiz', 'allows_multiple_answers': False, 'correct_option_id': 1,
'explanation_entities': [], 'close_date': None}}
Is there a way to include the chat_data which the Poll belongs to?
When the bot creates a poll (using Polling, I can't speak about webhooks yet) it updates its bot_data with {poll_id: {'chat_id': chat_id, 'message_id': message_id}} and when your bot process an answer, you can get the poll_id from update.poll.id and then use it on context.bot_data to get the chat_id
def poll_answer_handler(update, context):
chatId = context.bot_data[update.poll.id]['chat_id']
It's important to do not stop/restart the bot at any point between the creation of the poll and requesting the chat_id, otherwise the bot_data will be empty. Solution? Having persistence makes the bot_data persistent.
PS: This goes for Python-Telegram-Bot 12.6