Call this the week of Winston Peters - with the New Zealand First leader, riding a wave of renewed relevancy.  In not one, but two TV polls, New Zealand First featured above that critical 5 percent threshold - and furthermore in that most pivotal of spots - necessary for National to form a government. In Focus on Politics this week, RNZ deputy political editor Craig McCulloch breaks down the latest week of the election campaign, a week where Winston Peters came to the fore.