Christine Quinn and William Thompson have two tasks ahead of them in the mayor's race this weekend.
They have to take enough support away from Bill de Blasio to force a Democratic runoff, and each has to find enough support to make it into that runoff.
With just three days until the primary, Quinn's latest ad moves away from any direct attack on her opponents.
Instead, she's highlighting her own qualifications.
She'll be spending part of Saturday at lunch with friends of the late mayor Ed Koch.
The lunch was a weekly tradition that Koch attended until his death earlier this year.
Thompson will be making the rounds on the radio Saturday pushing for school reforms.
He picked up endorsements from some African imams in the Bronx Friday.
If recent polls hold, they're both looking for a spot in a runoff with de Blasio.
He's firmly in front, and at campaign stops Friday, it was clear that the public advocate has momentum with voters.
He can avoid a runoff with 40 percent of the vote.
Meanwhile, the Republicans running for mayor took aim at each other on NY1 Friday night, as each candidate appeared individually on the Road to City Hall.
"I'm not a professional politician," said Republican mayoral candidate John Catsimatidis. "And that's what I'm afraid of for our city, getting more professional politicians with IOUs that are not going to do the city well."
"No matter where I go in the city, people are responding to my vision for the future," said Republican mayoral candidate Joseph Lhota. "And they all laugh at John Catsimatidis, who should worry about his reputation going forward, about what he's doing. He's not been running a campaign about what he would do in the city, how he would do it."
"I believe that I have a solution to the economic problems of this city that neither one of my opponents do," said Republican mayoral candidate George McDonald. "They won't be trusted by the people whose votes they need to cross over to elect them in the final analysis."
Time is running out for voters to decide who they are voting for in the primary.
With just a few days to go, candidates are making their final pushes to secure votes.
While many New Yorkers know who they're voting for, others NY1 spoke with said they still haven't made up their minds.
"I just want to go over and take a look at all the candidates again and review the issues, but I haven't really decided yet," said one prospective voter. "A lot of the television commercials are, they're kind of negative ads, so I want to kind of see what the candidates have to say and kind of make a decision from there."
"Nevertheless, I made up my mind. Also I've interviewed, informally, many of my friends, and except for one person, no one has made up their mind," said another. "People are waiting for the last minute."
If you're not already registered to vote, you've missed your chance to participate in the primary, though you can still register and participate in the general election.