Fisher & Paykel Healthcare, another exporter, advanced 1.7 per cent to $12.82, an all-time high.
Xero gained 2.1 per cent to $26.95 and is up 51 per cent this year.
"We might see a slightly more complicated tax backdrop if we get a change of government, that would presumably be a positive for Xero - they're an exporter as well, which is another theme that has been in vogue," said Mark Lister, head of private wealth research at Craigs Investment Partners.
CBL Corp was the worst performer, down 4.3 per cent to $2.92, the lowest it has closed since August 2016. On Friday, the stock gave up rights to a 1.5 cents per share interim dividend.
"They've obviously had a bit of a difficult time of things lately, they had a poor month in August and there was a trading update that wasn't so good," Lister said. "Now you've got insurance companies around the world getting sold off because of the storms and earthquakes you've seen, so I think it's been dragged down in line with those."
Retirement village operators fell, with Ryman Healthcare down 1.8 per cent to $8.96, Metlifecare dropping 1.3 per cent to $5.87 and Summerset declining 0.6 per cent to $4.97.
"They all had a pretty difficult week last week as well, Summerset and Ryman posted good results last month but again there's political risk," Lister said. "If you get a change of government there's uncertainty about the housing market and whether you'll see a tax clampdown. These companies benefit from rising house prices, so maybe there's a bit of caution creeping in."
"I don't think it will be a game changer for their businesses - they're still largely driven by demographics, the ageing population and demand for healthcare, but at the margin it would be a bit of a headwind for profitability, compared with what they've seen over the last five years when it has been full steam ahead. It's a minor negative for them if you get changes which will limit house price gains from here on."