Linton Zoo in Cambridgeshire has been welcoming photographers for behind the scenes photo-shoots.
40 photos which were taken during the events have been entered into a photography competition.
The zoo says the standard of entries was outstanding. The winning shot of Zuri the lion was taken by Ellis Hall of Cambridge.
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A shock election result in 2010 created a marginal constituency with a four-way battle five years later.
Luton was the only place in the Anglia region that retained Labour MPs at the last election as the party lost more than a dozen seats.
Tonight starts off dry with clear skies but it will cloud over from the west with rain arriving later.