With its laser focus on pensioners  (the most likely age group to vote), George Osborne's fifth Budget was his shrewdest to date - and the Tories have been duly rewarded in the polls. Two surveys published tonight - Survation  for the Mail on Sunday and YouGov for the Sunday Times  - put Labour's lead at just one point.
As intended, the measures announced by Osborne have helped to draw the over-65s away from UKIP and back to the Tories. Survation puts the Conservatives up four points to 34 per cent, with the Farageists down three points to 15 per cent. Labour support has actually risen by one point to 35 per cent, showing that the Tories have benefited by clawing back voters from UKIP and winning over the previously undecided. YouGov does show a fall in the Labour vote, from 39 per cent to 37 per cent, but again it's UKIP that has suffered most, with its support down from 15 per cent to 11 per cent.
The polls are the best for the Tories since an ICM survey last summer put them level with Labour on 36 per cent (the last time they led in a poll was March 2012, just before the omnishambles Budget) and will inevitably lead many to conclude that the Conservatives are on course for victory in 2015. This might well be the case (the political and economic cycles look increasingly well aligned for Osborne) but it's wise to treat the numbers with caution for now.
It's not unheard of for the governing party to enjoy a bounce from the Budget (although it is rarer  than most think), especially if it is well received by the media, which fades as normal business is resumed. David Cameron's "veto" of the EU fiscal treaty in December 2011, which saw the Tories briefly regain their lead  over Labour, is a good example of how one-off events can skew voting intentions.
Even so, since we are still 14 months away from the general election, with some voters unlikely to return to the Conservative fold until the last moment (there is little prospect of UKIP polling 15 per cent in 2015), the Tories have cause to be hopeful of victory tonight.
The consolation for Labour is that as long as it retains the support of around a quarter of 2010 Lib Dem supporters (which is not guaranteed), its vote share will remain high enough for it to run the Tories close.