Bloomberg mulls 2020 run again

Former New York City Mayor Michael Bloomberg is preparing a possible bid for the White House.

That's according to multiple media reports Thursday, which say the billionaire businessman is expected to file paperwork this week to run in the Democratic presidential primary in Alabama, a state with an early filing deadline.

Bloomberg, who reportedly has been privately weighing a bid for the presidency for weeks, has not yet made a final decision on whether to run, but is keeping his options open as the Democratic primaries near.

Entering the race at such a late stage would trigger a major shakeup in the fight to be the party's presidential nominee, posing a threat to the more centrist candidates and prompting a possible showdown with more progressive candidates who argue billionaires already wield too much influence in politics.

Bloomberg has seriously considered running several times, both as an independent and a Democrat.

In March, the billionaire announced he would not seek the White House.