Watford ended a run of four league games without a win (D1 L3) when they won 2-0 at Derby on Saturday and are only outside the play-off spots on goal difference.
The Hornets welcome a Preston North End side who have not won in three, including a goalless draw at Luton at the weekend, and are five points above the drop zone.
Watford have lost just one of their past seven league games against Preston North End (W3 D3), though that defeat was the reverse fixture in October (0-3).
Preston North End have failed to win any of their past seven away league games against Watford (D4 L3), since a 2-1 victory at Vicarage Road in August 2005.