Answer:
election
Step-by-step explanation:
In a democracy, people vote to select/elect the ones to speak on their behalf and make decisions. These representatives debate and adopt laws for example at municipal, state and federal levels.
Once the person you elected based on the promises made is in position, you can only hope they'll respect their word and do what they said they would.
If they don't do their job properly, they risk not being re-elected next time around.