MacIntyre on voting

I just stumbled across an exerpt from Alasdair MacIntyre's "The Only Vote Worth Casting in November" in which he discusses how to approach a situation with two "politically intolerable" candidates.

MacIntyre writes:

When offered a choice between two politically intolerable alternatives, it is important to choose neither. And when that choice is presented in rival arguments and debates that exclude from public consideration any other set of possibilities, it becomes a duty to withdraw from those arguments and debates, so as to resist the imposition of this false choice by those who have arrogated to themselves the power of framing the alternatives. These are propositions which in the abstract may seem to invite easy agreement. But, when they find application to the coming presidential election, they are likely to be rejected out of hand. For it has become an ingrained piece of received wisdom that voting is one mark of a good citizen, not voting a sign of irresponsibility. But the only vote worth casting in November is a vote that no one will be able to cast, a vote against a system that presents one with a choice between Bush’s conservatism and Kerry’s liberalism, those two partners in ideological debate, both of whom need the other as a target.
….

We note at this point that we have already broken with both parties and both candidates. Try to promote the pro-life case that we have described within the Democratic Party and you will at best go unheard and at worst be shouted down. Try to advance the case for economic justice as we have described it within the Republican Party and you will be laughed out of court. Above all, insist, as we are doing, that these two cases are inseparable, that each requires the other as its complement, and you will be met with blank incomprehension. For the recognition of this is precluded by the ideological assumptions in terms of which the political alternatives are framed. Yet at the same time neither party is wholeheartedly committed to the cause of which it is the ostensible defender. Republicans happily endorse pro-choice candidates, when it is to their advantage to do so. Democrats draw back from the demands of economic justice with alacrity, when it is to their advantage to do so. And in both cases rhetorical exaggeration disguises what is lacking in political commitment.

In this situation a vote cast is not only a vote for a particular candidate, it is also a vote case for a system that presents us only with unacceptable alternatives. The way to vote against the system is not to vote.

I tend to agree. What do you think?