Los Angeles mayoral hopeful Spencer Pratt's campaign is confidently plowing forward with continued attacks against his opponents with just one day left until the primary election, after receiving some key backing from an influential billionaire. Over the weekend, Pratt revealed that he received a $1,800 campaign donation from Google co-founder Sergey Brin. Brin made the maximum donation allowed to Pratt's campaign. Pratt, 42, is one of three frontrunners in a tight mayoral race that is heading towards a likely runoff. He is running as an independent against incumbent Karen Bass and City Councilmember Raman. He has been registered as a Republican since 2020.A new poll by the California Post shows Pratt ahead in the race by a tiny margin, leading at 30.1 percent support. Bass is close behind at 29.5 percent, and Raman is in third place at 23.4 percent, according to the poll.No candidate is likely to earn more than 50 percent of votes in the primary election on Tuesday, meaning a second runoff election between the top two candidates is on the horizon. Over the weekend, Pratt worked out of his political playbook that helped his popularity surge by posting tweets over the weekend blasting his opponent, Nithya Raman. Pratt retweeted a post by Raman reminding people to vote that included a video of the candidate smiling and shaking her hair in the sun to the tune of Unwritten by Natasha Bedingfield. 'The only thing worse than The Hills is Nithia’s campaign,' Pratt wrote. At 12.30am on Monday, he retweeted a post by an X user who dug up a $1,800 contribution to Pratt's campaign from billionaire Sergey Brin. That amount is the maximum donation an individual can give to a campaign in Los Angeles. Spencer Pratt, 42, is continuing the political playbook that helped his popularity surge since he entered the race of Los Angeles mayor in JanuaryPratt is running for Los Angeles mayor against City Councilmember Nithya Raman (left) and incumbent Karen Bass (right). The race will likely go to a runoffAt 12.30am on Monday, he retweeted a post by an X user who dug up a $1,800 contribution to Pratt's campaign from billionaire Sergey Brin. The user framed it as evidence of 'Brin's rightward lurch,' but Pratt shot back and wrote, 'It’s called common sense.'Brin, like many other billionaires, does appear to have shifted to the right in recent years. He has become closely involved in California's politics, spending at least $60 million on state elections this midterm cycle. Brin is primarily focused on shooting down a billionaire tax in the Golden State. Brin started a nonprofit called Building a Better California with that aim, which has raised $93 million to fight a proposed one-time five percent tax on billionaire assets.Beyond billionaire support, Pratt has also received endorsements from high-profile celebrities, notably including Joe Rogan and Paris Hilton.In an episode of his podcast, Rogan said, 'I can't vote for you, but I'm rooting for you.' The influential celebrity moved from Los Angeles to Austin, Texas, in 2020 but added, 'If I lived in Los Angeles, no question whatsoever, I would vote for you.'Hilton, the reality star and heiress to the hotel chain bearing her name, commented 'Spencer for Mayor' with a raised hands emoji on the candidate's Instagram campaign video showing the trailer he has been living in since the Palisades Fire destroyed his home.Pratt's chances in the primary are certainly looking strong, but it is still anyone's game. The California Post poll that gave him a razor-thin lead of 0.6 percent over incumbent Mayor Bass has a margin of error of plus or minus 4.9 percent. Google co-founder Sergey Brin donated $1,800 to Pratt's campaign, which the candidate called 'common sense.' Brin is pictured at the Met Gala Influential podcaster Joe Rogan endorsed Pratt and said he would vote for the candidate if he still lived in Los Angeles Pratt also received an endorsement from Paris Hilton, the reality star and heiress to the hotel chain that bears her nameEven if Pratt is one of the two top candidates who makes it to a runoff election, the vast majority of Raman voters will likely flock to Bass, and vice versa.If the independent challenger defies those odds, he will then face his biggest challenge in the general election, as Los Angeles tilts overwhelmingly blue.The Daily Mail has reached out to Pratt's, Raman's and Bass's campaigns for comment.