Facebook co-founder Dustin Moskovitz has given an additional $15 million to the Democratic election campaign just one month after donating $20 million to suddenly become one of the party's mega donors, Politico reports

The 32-year-old, who is reportedly worth more than $12 million, has long been a philanthropist but had never given these amounts to a political cause. In fact, Moskovitz's only recorded political donation before this, according to the Center for Responsive Politics, was $5,200 to the failed 2014 House bid of Sean Eldridge, the husband of another Facebook co-founder Chris Hughes.

The extent of the unusualness to which a new source of mega money so suddenly appears was expressed by veteran Democratic strategist Chris Lehane, who told Politico, "This is a unicorn-type campaign gift — you just don't see someone basically walk into a campaign without a significant track record of activity and contribute at this level."

The surprised Democratic financial leadership is unsure whether this will be the start of a new steady source of mega dollars or merely a one-off response to Trump.

Moskovitz himself has declined to publicly talk about his political involvement, other than a post on Medium both times he made a contribution, which gives the impression that his objection to Trump is his motivating factor.

In the first post in September, Moskovitz wrote: "The Republican Party, and Donald Trump in particular, is running on a zero-sum vision, stressing a false contest between their constituency and the rest of the world… their positions, especially on immigration, which purport to improve the lives of Americans, would in practice hurt citizens and noncitizens alike.

"In contrast, the Democratic Party, and Hillary Clinton in particular, is running on a vision of optimism, pragmatism, inclusiveness and mutual benefit."

While acknowledging that the Republican presidential candidate serves as a voice for those who feel slighted, Moskovitz stresses that "Trump's promises to this group are quite possibly a deliberate con, an attempt to rally energy and support without the ability of intention to deliver.

"His proposals are so implausible that the nation is forced to worry that his interest in the presidency might not even extend beyond winning a contest and promoting his personal brand," he added.

Following his second mega donation earlier this month, Moskovitz put up a second post, saying: "The events of the past few weeks have only deepened my conviction that Hillary is the best choice for America. I hope that these contributions will help make that outcome a reality."