Kamala Harris has unveiled a few centrist-leaning policies, abandoned some past positions and left much else vague as she gears up for a critical US presidential debate with Donald Trump.

The Democratic vice president unveiled a list of policies on her website on the eve of the clash, with Republicans accusing her of “flip-flopping” on key issues.

Here is where the White House hopeful stands in five key areas:

Harris has stressed her commitment to the United States’ middle class, citing her own background of being raised by a single mother in California, and said she wants to create an “opportunity economy.”

One of her most concrete policies so far is a child tax credit of $6,000 for families of newborn children. She has also promised tax cuts for 100 million Americans while raising taxes on the richest, and to bring down housing prices.