Elaine Loughlin: Spring in McDonald's step after poll puts Sinn Féin back in the game

Mary Lou McDonald knows that Independents, a diverse group that are also now sitting on 20% support, are her party's real threat this time around.
What a difference a few percentage points can make.
With just days before voters go to the polls, it feels like Sinn Féin is very much back in the game.