Republicans in the upcoming session of the House of Representatives of the US Congress will have a narrow majority of 220 deputies against 215 Democrats, after the Democrats gained one parliamentary seat in California, according to the latest data from the Edison Research Agency, reports Reuters. 

US President-elect Donald Trump and Republicans will control the White House and both houses of Congress starting next month after the November election in which Democrats lost both the White House and the Senate, Reuters reported.

The slim majority in the House now held by Republicans will be further reduced to 217-215 in January after Trump selected two Republican lawmakers for top posts in his administration, Mike Waltz and Matt Gaetz, despite the latter later withdrawing.

Democrat Adam Gray has won a seat in the House of Representatives representing California, the latest result of the Nov. 5 House race.

Republicans this week outlined their plan to begin implementing Trump's agenda immediately — once they take office.

During the campaign, Donald Trump highlighted a number of priorities, including new tariffs, mass deportations of undocumented migrants, deregulation of the energy sector and the continuation of tax cuts introduced during his first term.