Democratic vote share in California:
1996 : 51.1% (Clinton)
2016 : 61.7% (Hilary)
All fairly close elections
Hilary's share of 61.7% in 2016 is the highest for any candidate in California since Roosevelt in 1936
Even in 1996 (when politics was less polarized), Clinton won 59.5% of the vote in NY, with Bob Dole winning just 31%
It is also the most populous state. Thus this one state alone massively increases the likelihood of "winning popular vote, losing election" scenarios