CORRECTED AND UPDATED WITH SP and PBP seats.
Irish Government Betting Odds - Paddy Power
Just looking at the odds being offered for seat ranges for each party at he next election; the money would suggest that this is how the next Dail would look;
FF : 52 (-24 on 2007)
FG : 54 (+3)
LP : 48 (+28)
GP : 1 (-5) - corrected
SF : 8 (+4)
SP : 2 (+2)
Now you can see thois totals to 166, because the odds include the bookie's margin (they'll never offer even money to two horses in a two horse race). We can assume that there will be independents and others in the next Dail, so each party needs to be pegged back a little.