"for there was a census in progress, and tens of thousands had come to the city to register."

The census was a record taking of the value of each citizen’s property and other assets. It was held on the Campus Martius. Any citizen who did not show up for the census was subject to severe punishment. The census was also sometimes held in the provinces. If, at the end of the census, a senator was found to no longer meet the property qualification for the senate, he would be required to give up his position.