A New York City media mogul, who has yet to declare his official run for president, revealed he would spend millions on registering hundreds of thousands of voters to improve his chances of being elected at the 2020 general election on Nov. 3.

Michael Bloomberg, 77 and a Democrat, will splurge between $15 million and $20 million on helping about 500,000 eligible people register to vote.

Bloomberg’s campaign team hopes to target traditionally underrepresented groups that might vote for Democrats like African Americans, Latin Americans, Asians, youth and those living in rural communities. The Associated Press confirmed this registration drive would start early in the New Year across Arizona, Michigan, North Carolina, Texas, and Wisconsin. There is also potential to visit more states.

Bloomberg Senior Adviser Howard Wolfson described the stunt as one of several parallel campaigns the candidate would run “effectively” and “simultaneously.”

“If Mike runs, we’re going to try to do what we can to run two campaigns simultaneously,” Wolfson told the Associated Press. “One campaign is a primary campaign—and there are a lot of great people in that contest and a lot of focus and activity around that but, at the same time, there’s another campaign going on that the president has begun that ends in November that also needs to be engaged.”

Bloomberg is separately spending $100 million on online advertising to bolster his election campaign. He has already filed paperwork to qualify for the presidential primary ballots in at least three states.

The move resembles a similar $45 million investment from left-leaning organization NextGen America, which was founded by fellow presidential candidate Tom Steyer (D), to register at least 270,000 young voters in the New Year.

“Mike is taking the fight directly to Trump where it matters most, in general election battleground states,” Bloomberg spokesperson Jason Schechter told the Associated Press. “He did it last week through a $100 million digital ad buy. He’s doing it this week at the ballot box.”

The candidate has raised eyebrows by running as a Democrat even though he was previously a Republican and an independent. No matter what political party he represents, Bloomberg still faces an uphill battle in several general election areas to defeat Donald Trump.

The incumbent won Texas with a nine point victory and also defeated the Democrats in Michigan, Wisconsin, Arizona, and North Carolina with a margin of between one and three points back in the 2016 general election.

A key battle ground for Bloomberg and other presidential hopefuls will be California, which has historically been a Democrat stronghold.