Yeltsin, however, relentlessly exploited his advantages of incumbency, patronage, and financial backing. With the advantage of incumbency, Obama faced no major challengers in the Democratic Party primaries. This means that the incumbency advantage gets more significant as political polarization increases. This proved too much even for the powers of political incumbency to overcome. Zaragosa, during the incumbency of Archbishop Gabriel Reyes. The power of incumbency becomes increasingly important, and accessibility by the public declines. The clerk then swears to the authenticity of the judge's signature, incumbency, and authority. During his incumbency the priory of Sts. He was also the first president to have his photograph taken while having incumbency. This fell out of use after the incumbency of Pope Paul VI in 1978. Serving since March 2000 (for ), Odisha's Naveen Patnaik has the longest incumbency. He lived for at least part of his incumbency at Shifnal.