Abortion is arguably the most divisive issue in US politics - and with the presidential candidates promising to either revoke national rights to abortion or take extra steps to safeguard it, the stakes have never been higher. With President Trump in the White House, anti-abortion activists are energised and Republican-controlled states have tightened restrictions. Yet public support for abortion rights is the highest in decades, according to the Pew Research Center, with 61% of people favouring legal access to the procedure - and that's changed how Democrats talk about it. Let's compare where the presidential candidates stand on the issue. Mr Trump's key message: We are making it harder to get an abortion now, want to overturn federal protections and would support a near-total ban. Mr Biden's key message: We will protect a woman's right to choose and fight to keep access to abortion legal. While it might sound like an issue you're either for or against, it's important to understand the details.