“…Studies suggesting they are include Reed, Scheiner, and Thies (2012), who found that their support bases began to converge after 2005 and valence considerations such as competence became important determinants of electoral victory; Scheiner (2012), who found that they discussed more of the same issues in Amy Catalinac 2009than in 2003and Dalton and Tanaka (2007), who found that voters perceived them to be closer in 2004 than in 1996. Indirect evidence is also found in the absence of conspicuous policy changes following the Democratic Party of Japan's (DPJ's) landslide victory in 2009 (e.g., Lipscy and Scheiner 2012;Hughes 2012). Studies implying divergence, however, include Sasada, Fujimura, and Machidori (2013), who document polarization in their roll-call votes after 2000; Taniguchi (2006), who finds considerable differences in their policy preferences; Shinoda (2009), who finds evidence of pre-election parliamentary confrontation between them; and Winkler (2013), who finds that candidates of the Liberal Democratic Party (LDP) shifted to the ideological right in recent years.…”