This third installment of a guide series on electoral maps and data visualization emphasizes the importance of selecting the right colors and styles to ensure the accuracy and integrity of electoral maps, which can vary significantly depending on factors such as the election type and number of candidates. The post examines designs from major publications and offers guidance on creating personalized maps using tools like Mapbox GL JS and Studio. It underscores the need for a well-contrasted and clear layout to help readers immediately understand the data presented, focusing on how typical electoral maps often highlight specific regions such as states or counties.