If we're going for purely legal say, then, no...I wouldn't expect to get much of one, were it to be me on the hotseat, as it were.
However, if we're talking about it from the perspective of the couple themselves, and their relationship, that's far more difficult to decide. On one end, yes, the male's part of the bargain is complete, but if you're in anything near a genuinely loving relationship, you're equals. Your input shouldn't thrown out simply because you have a penis, and that invalidates any compunctions for or against abortion you might have.
It takes two to make a fetus, after all. Except in cases of artificial insemination, I think the guy in the relationship ought to have some weight put behind his desires. Because, let me tell you, this is an important fucking decision. If my input on something this important is completely dismissed because my fuck-gear happens to include a cock and balls, then I'm fucking out of there, I'm sorry. I don't deal with dismissive fucksticks who devalue my opinion on important matters simply because I'm male. I'm an equal partner in any sexual relationship I'd be in, I fucking insist on it, and I'll be damned if I'll be treated as anything less.
In the end, the ultimate decision lies with the woman, of course. If she wants to abort it, that's...actually the desired outcome, for me. I don't want children. Ever. But, if she wants to keep it, such is her right, and I'll respect it...but, I wouldn't be able to stay with her, I'm sorry. I'm terrified of having a child, I'm scared of how they'd turn out, and I don't want to fuck something that fragile up, something that important...a new being's life and development would be, at least partially, in my hands, and I can't deal with that.