Port are chasing their 15th senior county title, O'Dempsey's can win a first in 42 years on Sunday.
The Laois Senior Football Championship throws in at O'Moore Park on Sunday afternoon at 4 O'Clock.
Defending champions Portarlington are preparing for the challenge of an in-form O'Dempsey's side.
Pat O'Sullivan will be in Portlaoise for Midlands 103:
Busy Bank Holiday Weekend In Store For Athlone Town
Big Weekend Ahead In Leinster Minor And U20 Hurling Championships
Leinster SFC: Opportunity Beckons For Westmeath
Westmeath Footballer Luke Loughlin Ruled Out For Remainder Of Season
Laois And Westmeath Battle For Place In Leinster LGFA Decider
Alex Dunne Set For Action In Miami This Weekend
Fundraising Walk Planned For Westmeath Man Left Paralysed In Freak Accident
Shane Lowry In Action In Miami This Week
Westmeath Secure Leinster Minor Football Quarter Final
CCFL: Two Draws In Senior Division
Potential Hometown Fight On The Cards For Joe Ward
Ava O'Connor Breaks Personal Steeplechase Record
Laois Fixture In Two Weeks A "Massive Game" - Kevin O'Brien
Camross Camogie Honoured In Laois Following Historic All-Ireland Triumph
Athlone Town Secure Vital Win In Women's Premier Division
Laois And Westmeath To Clash In Leinster Camogie Decider
Leinster SHC: Offaly Suffer First Defeat Away To Galway
Draw Made For First Round Of Tailteann Cup
Offaly Soccer Club Opens Doors To All With Football For All Initiative
Laois Claim Vital Win In Joe McDonagh