How? The WPI has 447 commodities under its belt, with different weights accorded to different commodity groups. Primary articles, notably food, fertilisers and items like crude oil, petroproducts, power, urea and mined coal have a total weight of almost 60 per cent. Prices of these items are fixed by the Government. In the run-up to the elections, the Rao administration chose to keep the so-called poor and middle classes happy by not raising these prices. On an average, their prices rose by only 3.5 per cent at end-December '95 compared to 10.5 per cent at end-December '94. And since they have the lion's share of the WPI, the index rose very slowly.