Although she has yet to release a comprehensive platform, her time as a California senator and prosecutor, her 2020 bid for the presidency and role in the White House as vice-president give hints as to where Ms Harris stands on a number of policies.
Over the years, some of her positions have shifted and some have said that she has struggled to define herself.
To get a better understanding of what her policy agenda now might look like, BBC News reviewed Ms Harris’ recent speeches and public statements as a 2024 candidate, her record as vice-president and her political history as a 2020 presidential candidate, California senator and prosecutor.
Ms Harris’s campaign told the BBC that the candidate’s most recent statements best reflect her intentions if elected president.
“Vice President Harris will build on the Biden-Harris Administration’s historic agenda that beat Big Pharma, created nearly 16 million jobs, and delivered on the first bipartisan gun safety legislation in three decades,” Harris campaign spokesperson Kevin Munoz said in a statement.
Here are Ms Harris’ positions on 10 key issues.
Economy
As a senator, Ms Harris championed a number of progressive policies, including paid family leave, affordable housing and free tuition for low-and-middle income families.
As vice-president, she has been Mr Biden’s partner in passing major economic legislation – regularly labelled “Bidenomics” – which included major investments in infrastructure and green energy.
But with inflation and high interest rates continuing to bedevil American wallets, polls have shown that the economy continues to be top of mind for many voters.
On Friday, Ms Harris released her economic plan, including mortgage assistance for first-time homebuyers, a tax credit for parents of newborns and bans on price gouging at the grocery store to help target inflation.
And like her opponent, former US President Donald Trump, she has come out against taxing tips.
“As president, I will be laser focused on creating opportunities for the middle class that advance their economic security, stability and dignity. Together, we will build what I call an opportunity economy,” she said Friday.
Immigration
Ms Harris’s position on the border has changed from when she first ran for office. In 2020, while campaigning for the Democratic presidential nomination, she held fairly progressive positions – such as promising to close down immigration detention centres.
In 2021, Mr Biden asked Ms Harris to oversee the diplomatic effort around immigration issues on the US southern border to reduce numbers arriving there.
Many Republicans have characterised her as a “border tsar”, but she was tasked specifically with working with Central American countries on the “root causes” of why people there were fleeing to the US.
As part of that effort, she announced in 2023 that she had helped raise about $3bn – largely from private companies – to invest in communities in the region, hoping to provide opportunities that would make immigrating to the US less attractive.
Earlier this year, she aided the effort to pass a hardline bipartisan border security deal that would have included hundreds of millions of dollars for border wall construction.
But Trump helped kill the deal, accusing Biden’s border policies of causing “death, destruction, and chaos in every American community”.
Her campaign said that, if she were elected president, she remains committed to “bipartisan solutions to strengthen border security”.