It's disingenuous to tout the Biden economy and then say well inflation, he has no impact on that. Expanded govt. spending always powers an economy and creates a feeling of wealth. Inflation is many times the symptom of such expanded spending and a recession is the hangover.
Inflation is not the "economy" It can affect the economy but in they are two different things.
GDP is important because it gives information about the size of the economy and how an economy is performing. The growth rate of real GDP is often used as an indicator of the general health of the economy. In broad terms, an increase in real GDP is interpreted as a sign that the economy is doing well.
On a GDP basis and low unemployment the US has had a very strong, too hot economy which was due to huge demand vs restrained supplies coming out of COVID, global warming destroying crops with record heat, hurricanes, floods more servere
Trump spent more than Biden and just tossed most of it out (delayed checks to everyone since he insisted they have his signature instead of normal one (Secty of Traasury I think).
Biden spending was more targeted and largely investments in future growth (clean energy industry. chip manufacuring, infrastructure for bridges in bad need of repair) and many other future investments for the future.
Harris (who by the way is not Biden) as she as VP follows the policy of her boss (Pres). ALthough Biden was great for the economy.
Now turning to yes the mlllions of folks that are being hit by high grocery prices and other inflation factors that are global not just US, (none of which Biden or any global leader controls):
Most of Trumps proposals would skyrocket inflation (Tariffs, tax cuts mostly for his wealthy class, mass deportation reducing needed labor etc etc).
Harris has been very specific with detailed proposals to reduce costs some by tax credits (child care, earned income, down payment for new homebuyer) and tax deduction up to $50k for new small businesses etc.
She pays for this by more fair taxation with increased corp tax - but still below what it was pre-Trump and reversing the Trump tax cut for the wealthy for those making over $400k of income and some other sources.
High income individuals have the lowest top rates in US history and in most of the world (and Europe etc also have VAT taxes the consumer pays far higher than sales taxes). When I was a tax superviosor at then "Big 8" Touche Ross (Now Deloitte) it was great to have more than $50k of earned income since that was taxed at the "max tax" rate of 50% vs up to 70% on unearned income. Not to mention our silly estate laws making it easy to donate to heirs (like Trump) huge amounts not taxed so you never have to work for your money other than be a con-man whose only major property he ever made money on was the one he inherited from father Fred)
Six bankrupcies, huge judgments, and remember "I am so rich" that he doesn't need to fundraise but pays his own campaign cost? Yah he has scammed millions in fund raising, fake charity, fake university etc. And admires dictators, Hitler and autocrats.
Just not what se need in the US.