Sanders banked on young voters. Here's how the numbers have played out | PBS NewsHour
Bernie Sanders aims to lower Medicare eligibility age in recovery bill
Sanders admits his age is an issue in 2020 - POLITICO
2020 election week ahead: Bernie Sanders and the 2020 age debate | CNN Politics
2020 Democratic Democratic Candidates Ages: Sanders, Biden, Bloomberg
Bernie Sanders Endorses Joe Biden For President : NPR
Can Biden Bridge the Democratic Age Gap? - YES! Magazine
Bernie Sanders won't run against Biden in 2024 primary
The Biden Age Is Hitting Its Stride
Bernie Sanders and Democrats' age problem
Joe Biden: Age, Presidency, Family - HISTORY
The Democratic Primary Doesn't Need Joe Biden | The Nation
Biden Is Trying To Win Progressives That Had Backed Sanders : NPR
Democrats see Biden and Sanders as very different ideologically | Pew Research Center
Bernie Sanders - Wikipedia
Is Bernie Sanders Too Old to Be President? - Pacific Standard
Joe Biden - Wikipedia
How a raw exercise of power yielded the Biden-Sanders showdown - POLITICO
Bernie Sanders slams Joe Biden's China trade stance in 2020 Democratic primary
How Old Is Too Old To Be President? One Geriatrician Says That's The Wrong Question | Here & Now
Bernie Sanders | Biography & Facts | Britannica
