Caoimhe was placed up for eviction by Dave yesterday after the minister won the puzzle 'Save And Replace' task.
She is joined in the public vote by Shabby and Sunshine, who received the most nominations from their fellow housemates.
Paddy Power has installed Caoimhe as the new favourite for the axe with incredibly short odds of 4/7. Shabby, who was tipped for the chop earlier this week, is currently rated 11/8 to leave.
Medical student Sunshine remains the long shot outsider at 16/1.