It's nothing special about Mississippi, or any other state. That's why it happened nationwide. We just finally started trying to win as many seats as possible...

Today (4/24/25), DNC Chair Ken Martin and ASDC President Jane Kleeb announced a historic “organize everywhere, win anywhere” strategy – a new four-year agreement to deliver more resources into Democratic state and territory parties than ever before – delivering on Chair Martin’s commitment to turbocharging investments in on-the-ground organizing and party building. Under the new State Partnership Program (SPP) agreement, each state party will receive a baseline of $17,500 a month, a $5,000 per month increase over the last agreement, and Republican-controlled states will receive an additional investment of $5,000 a month through the DNC’s Red State Fund, putting their total at $22,500 every month. The combined investments total a monthly transfer of more than $1 million from the DNC to state parties – the committee’s largest investment into Democratic state parties in history.

https://democrats.org/dnc-and-asdc-announces-organize-everywhere-win-anywhere-strategy-largest-ever-monthly-dnc-investment-into-democratic-state-and-territory-parties/

It's literally all it takes, about 12 million a year for the entire country.