From health care to climate change to criminal justice, Biden has proposed ideas more ambitious and liberal than policies supported by Hillary Clinton in the 2016 campaign, a McClatchy review of the candidates’ platforms found.

Taken as a whole, Biden’s policy platform represents a significant shift from Clinton’s. On nearly every major issue, Biden has either exponentially increased the scope of what Clinton proposed or advocated for new ideas that most Democrats would have up until recently considered fringe.

The former vice president’s embrace of an unabashedly liberal agenda cuts against some perceptions of him, both from progressives who criticize Biden as insufficiently bold and center-left allies who argue he can appeal to voters in the middle against in an election against Donald Trump.

But for a candidate who has generally kept within his party’s mainstream during his five-decade career, it also underlines just how much — and how rapidly — the Democratic Party has changed in the three years since Clinton was its standard bearer.