Why 22 Jul and why not 15 Jul? Both days are Tuesdays in any case!!
The fact is that the Congress wants more time to finalise the deal with many individual MPs, since each one is demanding astronomical sums as his fee. Assuming each one who will be bought will be paid around 50 Crores, Congress will need at least 2000 Crores. It is about 50% of their annual commission. No doubt, the American companies will foot the bill but it will take some time to get the money and that is why the delay.
Look at what is happening in Karnataka! BJP is buying other party MLAs and making them ministers. They have resigned from their parties and joined BJP. Even if they do not get elected next time, it won't matter since they will make enough money for the next ten generations before they quit.
They should make amendments in the Representation of People's Act whereby any elected representative who resigns prematurely for whatever reason will either foot the bill of the next elections if he wants to contest again or will be debarred for a period of ten years if he does not want to contest immediately. But the question is as to who will introduce the bill??
