Okay I'm not saying she's the best choice, wouldn't be my preferred choice, but also this is a poll run by the Daily Mail. I can't even find any pollster reputation ratings for them. I also can't find any of their methodologies published online, which is also sketchy. And knowing what we all do about the Daily Mail anyways, this should all be taken with a massive truckload of salt.
Edit: Ah found it, it was run by J.L partners, ranked 145 on five thirty eight pollster rankings for reliability (1.6/3 stars for reliability with a transparency score of 4.2/10). And again, without the methodology being published who knows. The pollster themself, James Johnson, is also a former senior advisor to Theresa May and the UK conservative party.
Unfortunately the interest rate is specifically set by law and tied to 10 year treasury bill rates. This cannot be altered with an executive action, would need congress to change the law.
https://studentaid.gov/understand-aid/types/loans/interest-rates#who-sets
That's why the executive orders are focused on things like minimum payments, how long it takes to get forgiveness, who qualifies, etc, because the laws give the department of education more latitude to adjust those things (or are supposed to at least, weird rulings from republican judges notwithstanding).