Betfair an outlier this morning

This morning when I ran the data scraper I was so surprised by the Betfair result I ran it again, and again. Let's start with the raw data from the scraper (including the run times).

2016-04-01 05:18:53,Betfair,1.27,3.0
2016-04-01 05:20:04,Betfair,1.27,3.0
2016-04-01 05:32:10,Betfair,1.27,3.0

	House	Coalition Odds ($)	Labor Odds ($)	Coalition Win Probability (%)
2016-04-01	Betfair	1.27	3.0	70.26
2016-04-01	CrownBet	1.14	5.5	82.83
2016-04-01	Ladbrokes	1.20	4.5	78.95
2016-04-01	Luxbet	1.16	5.0	81.17
2016-04-01	Sportsbet	1.20	4.5	78.95
2016-04-01	TABtouch	1.21	4.3	78.04
2016-04-01	William Hill	1.20	4.5	78.95

%	Fr 25-Mar	Sa 26-Mar	Su 27-Mar	Mo 28-Mar	Tu 29-Mar	We 30-Mar	Th 31-Mar	Fr 1-Apr
Betfair	78.47	78.47	76.91	77.47	77.33	77.33	75.92	70.26
CrownBet	82.83	82.83	82.83	82.83	82.83	82.83	82.83	82.83
Ladbrokes	80.10	80.10	-	78.95	78.95	78.95	78.95	78.95
Luxbet	81.17	81.17	81.17	81.17	81.17	81.17	81.17	81.17
Sportsbet	78.95	78.95	78.95	78.95	78.95	78.95	78.95	78.95
TABtouch	78.04	78.04	78.04	78.04	78.04	78.04	78.04	78.04
William Hill	78.95	78.95	78.95	78.95	78.95	78.95	78.95	78.95

Update

By Saturday morning, Betfair was no longer such an outlier. But today only one House gives the Coalition a greater than 80 per cent probability of winning the next election.

	House	Coalition Odds ($)	Labor Odds ($)	Coalition Win Probability (%)
2016-04-02	Betfair	1.24	3.85	75.64
2016-04-02	CrownBet	1.20	4.50	78.95
2016-04-02	Ladbrokes	1.20	4.50	78.95
2016-04-02	Luxbet	1.16	5.00	81.17
2016-04-02	Sportsbet	1.20	4.50	78.95
2016-04-02	TABtouch	1.21	4.30	78.04
2016-04-02	William Hill	1.20	4.50	78.95