"I hope you are flat out getting votes."
He then swiftly moved off to talk to staff in the cafe's kitchen.
English's diplomatic protection squad shunted media out of the narrow cafe walkway to get to the pair, as bemused cafe patrons looked on.
Walker said she had no problem with English but was strongly critical of National's Kaikoura MP Stuart Smith, saying he had been put in his position by the wine industry.
The cafe visit was an eventful one - English also ran into former All Black and MP Grahame Thorne.
Thorne said he played rugby with English in the parliamentary rugby team.
He told media that as a National supporter he was "terrified" about how the election could turn out.
"It could be a long night on Saturday."
English this morning visited a tractor and repair shop in Renwick, where after shaking each hand he asked for their vote on Saturday.
Most promised their support, but tractor mechanic Mike Street replied, "we'll see".
He said he was still undecided, and was concerned about a lack of a charge on water bottlers and foreign ownership of land - saying several wineries had been bought up recently by overseas buyers.