Who decides which candidate is "electable"? Rove? Steve Law? The Koch brothers? Maybe the media and pundits?
Or the grassroots, the voters, in a primary or caucus?
If you want to win races, then back the candidates the grassroots pick. If they put their foot in their mouth, or their head in their as ss, or both at the same time, then BACK THEM ANYWAY. But flipping out and backstabbing a candidate that falling into the gotcha question trap is just stupid.