Popular support for the National Party still exceeds 50% despite the Government cutting KiwiSaver and Working for Families in the Budget.
In two opinion polls released on Sunday night the Labour Party is still struggling to narrow National's lead in the polls.
The Labour Party had been hoping the Budget, which also included an announcement of partial privatisation, would start to dent National's popularity.
But in the One News-Colmar Brunton Poll National scored 52%, only marginally down from 54% the previous month.
Labour scored 34% and the Green Party 6%.
No other party got close to 5%.
In the Three News-Reid Research poll National recorded 53% support and Labour nearly 33%.
Each poll surveyed about 1000 voters and had a margin of error of plus or minus 3.1%.