Cartoonist most likely trying to express polls that show trends but they also reflect the most temporary changes.
Option: B
Explanation:
Cartoonist normally exaggerates the actual thing and use different models and symbols to draw the actual scenario. In political cartoon cartoonist overdo or overact to highlight the point. Polling system not only keep people up to the moment information but also show the trend of flow and reflect the temporary changes. Analyst related with cartoonist interprets the reasons behind that changes and again predict future trend and final result.
Cartoonist's act and work is easy to understand. At a glance anybody can understand the fact because of its good presentation with attractive symbology.