Ben Macintyre at the Times wants to know, and so do we:
On the Cameron plane in Scotland: prosciutto, mozzarella and peach salad, followed by rare roast lamb on a bed of lentils, with chocolate mousse for dessert. On the Brown bus, in Scotland: a bottle of Irn-Bru and a curly sandwich. George W. Bush served barbecued ribs to the press, whereas Al Gore provided, at most, a packet of M&M’s. Campaigning with Jacques Chirac was a sort of rolling banquet, with every stop involving a minimum of three courses. Lionel Jospin’s campaign served dry brie baguettes. Why is right-wing campaign food consistently better than left-wing campaign food?
If the left can’t deliver something basic as decent grub on their own, what makes you think they can run your country?
Positive Infinity 
A question as such is similar to a question raises whether my right arm is better than my left.
The reason for the right-wing food is better than the left could be:
a) the way that they make or handle the food;
b) the special ingredients that they put in for right-wing food that are so special than the left;
and many other reasons you can think of.
The same is for governing the countries. Different countries adopt different ways of governing whether there are in terms of strtegical plans; the ways to deal with their own people so as to gain favour from the people; and etc.
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