London By-Election Tests Burnham's Labour Against Greens

Voters in Holborn and St Pancras are casting ballots in a by-election seen as a key test for Prime Minister Andy Burnham's Labour Party. The seat, held by Labour since 1983, was vacated by former Prime Minister Keir Starmer. Labour's Sagal Abdi-Wali faces Green leader Zack Polanski, with results expected early Friday.