Few constituencies will have a heavier group of political hitters than in Dublin West.
Leo's political ownership of the formerly Lenihan centred Castleknock posh set means that he should be safe.
In the case of Ms Burton though, whilst she may be the designated national Queen Mum she faces a real battle for her own personal political survival.
How the Tanaiste fares will be a bell-weather moment which will define whether Labour lives or dies.
Her primary challenges are expected to come from Fianna Fail's David McGuinness or A N Other and more seriously Sinn Fein's Paul Donnelly who has been stealthily advancing over the last five years.
Dublin West is uniquely critical for both parties.
For Fianna Fail, failure to win a seat in the sole Dublin constituency to return a Fianna Fail TD in 2011 will confirm that Micheal's party are still the embalmed radicals of Irish politics.
Sinn Fein, having been chased out of Dublin West by Joe Higgins for two decades would consider the winning of a seat there to represent one of their sweetest triumphs.
They have been polishing this particular apple for so long it resembles Blake's famous poisoned apple.
For Joan Burton meanwhile the ides of 1997 where she lost her seat are coming sharply into view.
The challenge though is as stark and compelling as any she faced in the Liam Lawlor and Brian Lenihan age.
And should a compelling Reboot Ireland Alliance candidate such as David Hall emerge, Ms Burton, who is fighting on too many fronts for comfort already, could suffer the indignity of becoming the second Labour leader to lose her seat.
John Drennan's Guide to Politics - Spring 2015
The next election will change your life. In a special supplement with the Sunday Independent, John Drennan presents his guide to Irish politics.
Guide To Politics
- And they're off: the great election race begins but, as to where it ends, sadly nobody knows
- The key issues - Remember tax reform is not illegal, Enda
- It's like a talent show - you have to make the audience want you
- Could our interrupted revolution lie in the humanising of our politicians?
- 'It's awful losing your seat, it's a very public humiliation...'
- Too early to rule out FG/SF Coalition
- Shadowy back room boys and girls with the ear of ministers
- Enda and Joan's shaky house of cabinet cards
- Despite Enda's stated preference Easter 2016 not yet definite
- As they hatch their plans, what might be the hopes and ambitions of our party schemers?
- Battle of the leaders to be key deciding factor in election race
- Spectral scenarios or sweet dreams
- When the fuss is over who will be the winner?
The Gender Gap
The Generation Game