Campaign finance rules are laws regulating how election campaigns are funded, including limits on contributions, spending caps, and disclosure requirements. These rules aim to ensure fair elections by preventing wealthy individuals or organizations from having disproportionate influence and promoting transparency about who funds political activity. Rules vary by jurisdiction: federal elections, provincial elections, and municipal elections each have their own regulations. Common elements include limits on individual contributions, prohibitions on corporate or union donations (in some jurisdictions), spending limits during campaigns, and requirements to publicly disclose contributions and expenses. Violations can result in fines or other penalties.