Still, there is scant optimism that the changes in leadership in Moscow and Washington will shift the downward momentum in relations between the two nuclear powers.
Few Russian analysts in Washington believe that Dmitry Medvedev, the new Russian president hand-picked by Putin, will have the power to boost democratic rights, as he has promised. And while all three U.S. candidates pledge to work more cooperatively with other nations than Bush has, campaign rhetoric suggests none would take a more conciliatory approach to Russia after they move into the White House in January.
"All three candidates have a jaundiced view of Russia's recent performance in terms of political freedoms, freedom of the press and civil rights," said Leon Aron, director of Russian studies at the conservative American Enterprise Institute. "It is likely that the next administration will be more critical."
Skepticism in Washington follows from the belief that Putin, whom Medvedev appointed prime minister a day after his May 7 inauguration, will bring most of the power of his old post to his new one.
"Putin is not going to be a potted plant," David Kramer, assistant U.S. secretary of state for democracy, human rights and labor, said in an interview. "He has sent signals that he is going to be active and influential."
Randy Schoeneman, an adviser to Republican candidate John McCain, also has doubts that Medvedev will control Russia's course.
"Senator McCain hopes to see a number of changes in Russian policy, but given what appears to be the power relationship between Medvedev and Putin, it's unclear whether Medvedev, even if he wants to change anything, will have any ability," Schoeneman said.
The Bush-Putin relationship began warmly. After their first meeting in June 2001, Bush famously commented that he looked into Putin's eyes and "was able to get a sense of his soul." Putin's support for the United States after the Sept. 11, 2001, attacks also boosted ties.
But those relations deteriorated with U.S. criticism that Russia was becoming more autocratic; Russian opposition to the Iraq war; sharp bilateral differences on U.S. missile defense plans in Europe; the independence of Kosovo; and separatist movements in Georgia.
In a rare diplomatic breakthrough in recent relations, the Bush administration signed a civilian nuclear cooperation agreement with Russia this month. But that deal is facing stiff opposition from lawmakers, who argue that Russia is not doing enough to prevent Iran from acquiring a nuclear weapon and that now is not the time for cooperation with Putin's Russia.
The anti-Russian - or anti-Putin - mood is also appearing in the presidential campaign. Of the three candidates, McCain has been the most outspoken critic. He has advocated expelling Russia from the Group of Eight industrial nations and made Putin the butt of a punch line. During a campaign speech in October, he joked that like Bush, he has looked into Putin's eyes. "I saw three things: a K and a G and a B."