Bloomberg's Washington bureau is so left-wing it makes the New York Times look like National Review.
The latest example: The Times and Bloomberg both write the same article about political spending via non-profit groups organized under section 501(c) of the tax code.
The New York Times article at least says the organizations "have been growing in popularity as conduits for large, unrestricted donations among both Republicans and Democrats since the 2006 election." [Emphasis ours]. The Times article also includes a reference to "501(c)(5) labor unions, which have been supporting Democrats."
Compare that to the Bloomberg article, which runs under the headline, "Republican Groups Benefiting From Hidden Money To Overcome Democrat Cash," and which begins, "Republican-leaning groups that don't disclose their donors are raising and spending millions of dollars on the U.S. congressional elections, helping make up for the party's fundraising deficit."
The Times article and the Bloomberg article share the same leftist unstated assumptions that money in politics is somehow bad and that anonymous speech is somehow bad and that anonymous money to pay for political speech is therefore doubly bad. But at least the Times can see that Democrats are doing it too, while the Bloomberg article ignores that.