As far as I know political scientists have not found any significant evidence that elected officials' endorsements make much difference with the electorate. Nonetheless it is a concept that we need to teach in our government classes. Above is my governor's endorsement of George Allen (R-VA) who was a former governor and US senator from VA whose presidential ambitions were shattered by his use of the word macaca. Allen is running against Tim Kaine who is also a former governor and Obama's ex head of the DNC. This race will be one of the big ones in the US, partly because VA will be one of the most targeted races for the presidency and partly because of the fact that it pits two former governors against each other.