We know Blair is a problematic character for a lot of Labour members and supporters for all sorts of reasons, not least the Iraq war. Yet this is a problem not shared by everyone. By now most voters are quite indifferent to Blair and his works. Those that were opposed to his war, which was a majority at the time, might feel negative vibes toward him but few, if any, are going to be basing their vote this May on what happened 12 years ago. In a very few places, like Norwich South, rejecting Blair publicly as Clive Lewis has done might add a sprinkling of Green and wavering left-Laboury votes to his tally and push him across the finish line, but he's virtually unique in that position. For most voters, the principled stand of their Labour candidates will barely register.
Were I a candidate, that money would be going into my campaigning war chest. This for three reasons. In the first place, a cheque from Blair's office won't be dropping through the letter box of your CLP secretary - the cash is going to the national party and then distributed out to marginals. Second, if Blair was dangling a thousand quid with the promise of future favours, or getting chummy with Progress, that is a problem. If Blair was trying to engineer backing for a policy agenda, that is a problem. Yet it's none of those things. The donation is no-strings attached. The money is being distributed without fear or favour, regardless of candidates' politics, on the basis of what the party defines as a marginal.
Most importantly, comrades who want to turn down the money have to remember that ultimately, this campaign isn't about them. This general election really does matter, it's between a party absolutely determined to screw our people and another that will provide some of the poorest and most vulnerable immediate relief. A thousand quid can help in seats where the Tories have been throwing dosh round like confetti, it can help ensure we get most votes, most seats, and get the party vaulting that overall majority hurdle.
My advice is take the money and carry on campaigning. There's more than your possible future parliamentary career at stake.