I don't think people vote based on whether Treasury decides there is a surplus or not.
People vote based on what they see around them, their friends losing jobs, their friends children being forced to work at tescos for tuppence or do free internships, their requests to councils, hospitals, services for support which are turned down or not possible because of the cuts.
Labour is making the same mistake of assuming that general bleatings in the House will make people support them. It might work inside that room, but it doesn't work in the real world where millions are unable to heat their homes and feed their families but wages aren't going up.
And tweaking these things doesn't help either - a few pounds here and a few percent there makes no difference if year on year the economy only benefits the big businesses, the landed gentry (homeowners) and the overpaid professionals. I do wish they would stop treating people like idiots and get on and mke some real changes.
Raising the pension age is a classic example of 'oh shit money's really running out now, let's do something quick that looks good to the IMF and covers me and my friends backs.'
There are alternatives to this - like increasing tax on high pensions.