Obertan seals it for Magpies
For all their determination, Blackburn were left empty-handed, and manager Steve Kean knows they will have to show some extra guile if they are to avoid relegation.
An early own goal from Scott Dann and a late strike by Gabriel Obertan handed Rovers their ninth league defeat at home, but Kean's men will be left wondering how Newcastle stole victory.
Combative Toon midfielder Yohan Cabaye had been handed a three-match ban for his stamp on Brighton's Adam El-Abd, but it was his replacement who played a big part in the opening goal after 12 minutes.
After Jason Lowe was caught napping, Leon Best nipped in, sliding the ball across to Ryan Taylor, whose timid strike took a huge deflection off Dann and beat Paul Robinson.
Blackburn were dealt their own sliver of luck just before the break when referee Phil Dowd awarded them a rather soft penalty after Danny Simpson was adjudged to have brought down Anthony Modeste.
However, David Dunn's spot-kick was saved by Tim Krul, who recovered to keep out Morten Gamst Pedersen's follow-up.
After the frantic first half, the opening stages of the second were rather tame. Dann missed the chance to earn his reprieve when he headed straight at Krul.
And, as Blackburn continued to push for an equaliser, space was left at the back for Obertan to break through in stoppage-time to seal the win.