Government sources are playing down the speculation over plans to give prisoners the vote, saying no decision has been taken.
But the reports were enough to draw an immediate response from Conservative MPs.
Nick de Bois, secretary of the influential 1922 committee of Tory backbenches, tweeted:
Sitting working with 5 other Cons MPs - if reports of prisoner voting rights are accurate then that's 6 MPs who won't vote for it
Tory colleague Douglas Carswell added:
"@nickdebois: Sitting w/ 5 other Cons MPs - if reports of prisoner voting rights accurate that's 6 MPs who won't vote for it"<- make it 7
Richmond Park MP Zac Goldsmith wrote:
MPs almost unanimously rejected votes for prisoners. If it happens all the same, does that mean the UK Parl officially no longer matters?
More top news
The Democratic presidential candidate may also have shown his cards on his choice of running mate.
The US president also shared a post on Twitter accusing Dr Anthony Fauci of misleading the public over hydroxychloroquine.
Fears over an impending second wave of coronavirus dominates Wednesday’s front pages.