Yes. It can be assumed that Sumner had the support of the people as the legislature was popularly elected. The legislature also passed Sumner's own Objections to the Mexican War. This appears to be another sign that he was respected and had the support of the voters of Massachusetts.
Democracy dates back to have started to develop in the days of Ancient Greece in the city state of Athens.
Not sure if this is what you were looking for but I hope it helps.