Sometimes, voters get what they appear to wish for without voting. The mere approach of an election can cause a government to lose its nerve on an issue it knows to be unsettling the electorate.
National lost its nerve a little on immigration near the end of last year when it raised the bar on skilled migrants and followed that up in April this year with a crackdown on temporary work visas.
No doubt the party's polls and focus groups were reflecting the concerns widely aired in public forums, that infrastructure was creaking under the strain of record net population gains since 2013, that migrant workers were taking jobs from young New Zealanders, that higher income migrants were driving up Auckland house prices, and "cultural" concerns largely unspoken but no doubt underlying the voters' wish for a "breather", as the Labour Party puts it.
Voters should be careful what they wish for. While the changes to visa rules in November and April looked reasonable and moderate at the time - and were criticised by the Opposition as not going far enough - persistent reports suggest they are having a severe impact on livelihoods in the industries that rely on migrants to meet chronic shortages of skills and labour.
The April decision to use the median wage (currently $49,000 a year) as the main criterion for issuing a skilled labour visa is said to be proving particularly onerous.