Andrew Gillum, the Florida Democrat who lost last year's contested governor's race, announced an ambitious registration project Wednesday aimed at undermining President Trump's chances of winning the Sunshine State in 2020.

In announcing a plan to turn 1 million Florida voters blue, the former Tallahassee mayor also ruled out a 2020 White House bid, ending speculation he would leverage his newfound national name recognition into a presidential run.

"We the people are greater than the people in power," Gillum said during a rally at Florida Memorial University. "We've got to know that, we have to believe that, we have to command that, and we've got to go to work to make that true."

"And so today, I came down here to Miami Dade, Fla., to share with you that our partners and so many others, that we are going to make a commitment that all that we went through, that all that we've worked for, 70,000 volunteers who organized on our behalf across this state and over a million cellphone conversations that we opened up two-way communication with, the 4 million plus voters that we received, the people who care deeply about this state, that collectively we are going to commit ourselves to registering and engaging 1 million voters between now and 2020's presidential election," he said.

Gillum reflected on his close race against former GOP Rep. Ron DeSantis in the 2018 gubernatorial race, saying his defeat "hurt." He conceded to DeSantis weeks after their Nov. 6 election due to a protracted political and legal fight over the close results, which had triggered a series of machine and manual recounts.

Gillum also slung political mud at Trump, describing him as "not normal."

"Now I know some of y'all have been trying to push me to get on the ballot in 2020, but what I want you to know, more importantly, that we are all on the ballot in 2020, right?" he said, referring to issues such as education, climate change, and gun control.

Gillum's announcement coincides with the Florida Democratic Party on Wednesday outlining a $2 million plan to register 200,000 of the estimated 4 million unregistered voters in the state before its 2020 primary with the help of data science firms and an army of full-time organizers.

Florida is a crucial battleground state with 29 Electoral College votes, which Trump clinched in 2016 by a single percentage point. Several Democratic figures and groups, including Michael Bloomberg and Priorities USA, have already rolled out proposals to flip Florida, as well as Michigan, Pennsylvania, and Wisconsin. All those battleground states went to Trump in the last presidential cycle by slim margins of victory.