By rigorously and relentlessly attacking Bush's legitimacy at every opportunity and doing what Rep. Conyers is doing - launching an endless and expanding series of investigations and hearings and press releases on the election theft scandal. All the evidence is on our side, and more comes to light all the time. The Bush cartel is busted if the Democrats simply refuse to play along with the charade. Expanded investigations will serve to keep defensive Republicans back on their heels and force them to dissemble and cover up - increasing the chances they make a mistake and a smoking gun is uncovered (remember the cover-up is worse than the crime - although in this case the crime is pretty horrible).
Rather than spend the next four years having doors slammed in their faces as strutting Emperor Bush and the neocons bamboozle the American people into going along with their draconian dream-legislation and global war agenda, Democrats could tie the Repukes up in knots trying to defend Bush's non-existent legitimacy.
If the situation were reversed, this is precisely what the Republicans would do. We own this issue, and we should beat the Republicans to a pulp with it. It would weaken an already wobbly Bush over time, as the months drag on and new evidence and dirty laundry is brought to light. At the very least, the Republicans would be forced to address the electronic voting problem and we might get our democracy back.
Further, if the Repukes use the "nuclear option" in the Senate by eliminating filibusters, then the Democrats would have credibility and recourse to launch their own nuclear option by exposing Bush's illegitimacy. Remember BushCo does not yet control the court of public opinion.
Rather than treating the electoral fraud issue as the proverbial "crazy aunt in the basement", the Democratic party should make it the unifying centerpiece of their resistance to Bush.
And if you worry over the wisdom of this strategy ask yourself this question: do we really have any other winning issue, candidate or strategy so long as the Republicans control the counting of the vote?
The alternative is to watch Hillary/Feingold/Dean/Kerry or Obama lose another Diebold/ES&S farce in 2008.
Is that really what you want to work towards?