1. a person who conducts opinion polls or surveys
2. a person who votes in an election
Usage: formal
3. a computer program or system that regularly checks for updates or changes
Usage: computing

Examples

• The poller called to ask about my voting preferences.
• Exit pollers interviewed voters as they left the polling station.
• Every registered poller has the right to cast a ballot.
• The network poller checks server status every five minutes.
• Political pollers predicted a close election.
• The database poller detected new records automatically.