Employees at Google, Facebook and Twitter, which have been accused by President Donald Trump of being biased against conservatives, have donated just over 7 per cent of a total of $2.4million to Republican candidates running in midterm elections this year.

According to Federal Election Commission data first analyzed by Fox News, staff at the Silicon Valley tech companies poured $2.224million into the coffers of Democratic hopefuls, compared to $176,000 that went to those running on the Republican tickets in races across the country, including the heated battle between Senator Ted Cruz and Beto O’Rourke in Texas.

Trump has repeatedly called out those working in the tech industry, accusing them of tipping the scales against conservatives.

FEC filings show Google employees have donated the most money this election cycle, shelling out more than $1.5million on Democratic candidates and a paltry $117,000 on Republicans

At Facebook, workers spent a total of $549,000 on campaigns run by Democrats and just $58,000 on GOP campaigns

CEO Jack Dorsey's (pictured) staff at Twitter has donated no money to Republicans this year, whereas more than $100,000 in donations has gone to Democrats

In a tweet fired off in August, the president wrote: 'Google search results for "Trump News' shows only the viewing/reporting of Fake News Media. In other words, they have it RIGGED, for me & others, so that almost all stories & news is BAD. Fake CNN is prominent. Republican/Conservative & Fair Media is shut out...'

A month prior, Trump accused his social media platform of choice, Twitter, of 'SHADOW BANNING' prominent Republicans and vowed to launch an investigation into 'this discriminatory and illegal practice.'

Top executives at all three companies targeted by the president's rants have denied manipulating their algorithms to favor the left.

In his testimony before the Commerce and Judiciary Committees on Capitol Hill in April, Facebook CEO Mark Zuckerberg conceded that Silicon Valley is 'an extremely left-leaning place,' but he added that he strives to ensure that his company does not 'have bias in the work' it does.

Striking a similar tone, Twitter CEO Jack Dorsey said in August that most of his staff were 'left-leaning,' but dismissed the notion that the social media site excluded users espousing conservative views.

In late September, Google CEO Sundar Pichai wrote in an internal email that suggestions that Google would interfere in search results for political reasons were ‘absolutely false. We do not bias our products to favor any political agenda.’

The breakdown of individual donations shows that no one on Twitter's staff has donated any money to Republicans this year, whereas more than $100,000 in donations has gone to Democrats.

At Facebook, workers spent a total of $549,000 on campaigns run by Democrats and just $58,000 on GOP campaigns.

Of the three Silicon Valley firms, Google employees have donated the most money this election cycle, shelling out more than $1.5million on Democratic candidates and a paltry $117,000 on Republicans.

O’Rourke, the Democrat running to unseat incumbent Senator Cruz in Texas, has received more than $30,000 from Google staffers and $18,000 from Facebook employees, as opposed to his Republican rival who received a $250 donation from a single employee at the search engine.

Both Google CEO Sundar Pichai (left) and Facebook CEO Mark Zuckerberg have denied that their companies were biased against conservatives

FEC filings tracking donations of the tech companies' political action committees, however, tell a more complex story.

Facebook and Google's PACs have traditionally favored Republicans over Democrats, including in 2016, when both companies lavished a total of $1million on GOP hopefuls and just $878,000 on Democrats.

But in the run-up to next month’s midterm elections, Facebook and Google's PACs have donated $607,000 to Democrats and $538,000 to Republicans.

According to quarterly campaign data released by the FEC last week, during the month of September Facebook contributed to 38 Republican politicians and PACs, compared to 20 Democrats.