Theories of ambition teach us that elected offices are valuable commodities to certain politicians, and under the right circumstances, the benefits of running for an office outweigh the associated risks. Yet, some ambitious politicians emerge as candidates while others do not. This book analyzes strategic candidacy decisions to explain how primary elections for the United States Senate unfold. With new, comprehensive data on pools of potential candidates, it examines the determinants of electoral and fundraising success, analyzes the importance of the timing of candidacy decisions and the...