Photo: Mario Tama/Getty Images It is hard to see what kind of political career Kamala Harris will ever have again. This makes her unique among recently vanquished major-party nominees — barring a remarkable shift in circumstances, there really is nowhere else for her to go. Every defeated presidential nominee, until Harris, had a place within their party after the crushing loss. Al Gore became a famed environmental activist; John Kerry enjoyed years as a senior statesman in the Obama