With the big run-off election Saturday, KENS 5 wanted to further examine who is showing up to the polls and from what parts of town.

Previously, we broke down the ages of voters that showed up for the election in May, showing that less than 3 percent of the vote came from people between the ages of 18 to 24 years old.

RELATED: San Antonio Millennials not hitting the polls

Now, it’s time to examine where the mayoral candidates are getting most of their support.

Using a color-coded map, we can see which precinct was won by the three major candidates in May. One thing Is clear: Nirenberg and Taylor performed as expected in their respective districts. The northwest went for Nirenberg and the east side voted for Taylor.

Dr. Walt Wilson, a UTSA political science professor, said that the east side turnout was particularly high for that part of town.

“That’s kind of a credit to the mobilization in the east side community. I think there are a lot of leaders in the east side who are doing a good job informing people, mobilizing them, and getting them to the polls,” Dr. Wilson said.

In May, Taylor finished about 5,000 votes ahead of Nirenberg. She picked up a huge portion of that on the north side, which is the part of town that traditionally has the biggest voter turnout. Dr. Wilson noted that it’s all about demographics.

“Wealthier individuals tend to have more flexibility in their ability to make it to the polls. They’re more likely to have transportation. They’re more likely to be mobilized by campaigns,” Dr. Wilson explained.

Of course, the big question going into the run-off will be, who will gain Manuel Medina’s voters living on the west and southwest sides of town?

“I think we are going to see them swing Ron Nirenberg’s way. He's probably the more liberal candidate in the race and Manuel Medina is the former Democratic chair and brought Democrats to vote in the first round,” Dr. Wilson said.

Dr. Wilson was quick to say that there's no guarantee that Medina's voters will flock en masse to Nirenberg. Either way, he's predicting a tight finish:

“I think it’s going to be a very close race."