You mean, like the Democrats in the 106th and 108th Senate?
Umm ... the Dems held up 6 nominees but confirmed the majority of Bush's judicial nominees. We're talking here about what would be 1 very important appointment. It would be possible to block 1 or 2 or even 6 different nominees for this one position, but eventually it would reflect poorly on the GOP.
BTW, if you want to rehash those 6 nominees that were held up we can. Personally I was ok with the nominations of Kuhl, Rogers Brown, and Estrada but had HUGE HUGE problems with Owen, Pryor, and Pickering.