America's aging liberals could lend Joe Biden an unlikely boost in his re-election struggle. 

The traditionally conservative voting bloc have been veering left in recent times, with the explanation determined to be a simple on - liberals are getting older. 

According to analysis by the New York Times, longer life expectancies among women and college graduates - around six and eight years respectively - may turn the tide after millions of senior Republicans have died. 

However, polls also suggest Biden may be losing significant support among young voters, with a new poll this month finding half of voters under 40 are looking to vote for a third-party candidate amid a surge for RFJ Jr.