(Elise Amendola | AP file photo) In this Jan. 29, 2019 file photo, potential Democratic presidential candidate Michael Bloomberg speaks to workers during a tour of the WH Bagshaw Company, a pin and precision component manufacturer, in Nashua, N.H. Bloomberg, the billionaire former mayor of New York City, is opening the door to a 2020 presidential campaign. Bloomberg announced earlier this year that he would not seek the Democratic nomination. But in a statement, his political adviser Howard Wolfson says Bloomberg is worried that the current crop of Democratic presidential candidates is “not well positioned” to defeat President Donald Trump.