Awful is the word.
..................

"Maybe it is possible to consider the Lib Dems"

And if you are in a constituency where the Lib Dem has a chance under the present bent electoral system, that makes sense.

Voting for whoever is most likely to bring electoral reform also makes sense. Gordon's promise of a referendum on that strengthens the case for Lib Dem sympathisers to vote tactically for Labour where the Lib Dem hasn't a chance. (And obviously any sensible Labour supporters will vote Lib Dem wherever that is the best hope of keeping out the Tory.)

Of course Labour promised that in 1997, and has made no efforts whatsoever to keep the promise all these years, but there is no prospect of the Tories doing anything to reform the voting system.

A hung parliament would probably be the best outcome - and that only happens if a lot more people vote Labour, and in some cases Lib Dem, than seems too likely at present.

If the Tories win it will likely mean Scotland going independent in a couple of years, which means the end of the United Kingdom, and goodbye to the Union Jack. On the other hand we'd be stuck with the Tories for the forseseeable future.