CCTV image shows Mr Cromar getting on to a bus.
Police are continuing to appeal for information about the whereabouts of 88-year-old Alexander Cromar, who was reported missing on Wednesday, 6th June 2012.
It was thought he was last seen leaving his home in Concorde Way, Jarrow, South Tyneside, on Sunday, June 3. However, police enquiries have established he was seen later that day shopping in Morrisons and Wilkinsons in Jarrow.
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The constituency of Selby and Ainsty is a largely rural North Yorkshire seat between York, Harrogate and Pontefract.
York Outer was created for the 2010 election, replacing the City of York seat.
York Central was created for the 2010 election, replacing the City of York seat.