This probably doesn't change much, but suppose for the moment that the Democrats had one extra vote in the Senate in back in 2003. When the tax cuts proposed that year were placed before the Senate historically, the result was a tied vote. The legislation passed thanks to Cheney's tie breaking vote. But let's imagine that there had been one extra vote against the legislation. Instead of a 50/50 tie, it narrowly fails at a 51/49 margin. What, if anything, would be the outcome of that eventuality?