Gabriela is an undecided voter. Here’s the very different content TikTok and X showed her

The biggest changes I’ve spotted on Gabriela’s social media feeds over the two years I’ve been running her profile have happened on X.

In recent weeks, Mr Musk has been very vocal about his support for Trump, which he’s entitled to do as a private citizen. He has also accused Twitter of old – as well as other social media sites – of suppressing right-wing view points. And he has previously said he believes X is a space for all political opinions.

But Gabriela’s feed shows how, at least to one originally neutral viewer, the site skewered in Trump’s favour – which appears to be in part because of changes to how the site works under Mr Musk’s tenure.

Last month, X also changed its rules so accounts can make money according to engagement from premium accounts – likes, shares and comments – rather than the ads that pop up under their posts.

I investigated how these changes helped some users make thousands of dollars, they say, from sharing content that included election misinformation, AI-generated images and unfounded conspiracy theories.

X’s user base is smaller than lots of other sites. But it is the home of politicians, activists and journalists and screengrabs from its site can migrate onto larger platforms.

Another significant but less extreme shift has occurred on Gabriela’s TikTok feed.

Before she didn’t see much about the Democrats, but after Joe Biden announced he was no longer running to be President her feed has been increasingly flooded with pro-Kamala Harris videos.

Because Gabriela isn’t real, it’s impossible to know how much she would react to any of these social media posts. Plenty of factors beyond the online world could shape her decision.

One thing’s for sure, though, my previously apolitical voter has not been able to avoid the deluge of politics – and algorithms on the sites, which appear to favour engagement over all else, are shaping the way that she receives politics through her feeds. Who and how she votes could depend on which social media site she trusts and relies on.

X did not respond to questions from the BBC. X says online that its priority is to protect and defend the user’s voice. All of the other major social media companies say they have policies and measures in place to protect users from disinformation and hate.