Obama and Putin's domestic poll ratings compared, Andrew Taylor, 09 04 14

According to the results of a Quinnipiac University National Poll released today 42 percent of voters approve of the way Obama is handling his job as president, while 50 percent disapprove. Quinnipiac said Obama now gets a negative 39 percent to 55 percent rating for his handling of foreign policy, one of his lowest foreign policy grades ever.
http://www.rttnews.com/2296695/obama-approval-rating-ticks-higher-but-remains-negative.aspx?type=pn

Meanwhile, in the Russian Federation, according to the VCIOM All-Russian Public Opinion Research Center, since the beginning of 2014 Vladimir Putin’s rating has risen 15 percent and stands at 75.7 percent – the highest in the last five years.
...
A different Russian poll conducted by VCIOM on March 14 and 15 showed that 91.4 percent of Russian citizens approve of Crimea becoming a part of the Russian Federation. Only 5 percent said they were against such an outcome. 86 percent of respondents claimed they already consider Crimea - home to an ethnic Russian majority - a part of Russia.
http://rt.com/politics/putin-rating-crimea-peak-041/

Of course polls do not indicate the rightness or rectitude of a Leader's policies ~ the public may be wrong, but the comparative support given by the two nation's citizens do matter because they embolden or inhibit the respective administrations vigour in pursuing geopolitical and domestic agendas and interests.

In this regard we may assume that Obama, Nuland and Kerry for all their bellicosity and tough talk have been attached to a very short leash by the American people, particularly in Foreign Affairs, whereas Mr. Putin has tapped into the popular conviction held by Russians that Crimea belongs in the Federation and that the Kiev interim government is a Russophobic coup regime contaminated further by its affiliation to fascist and extremist rightist groups and parties.

This is only one factor among many conditioning the trajectories that may ensue in the ongoing stand-off between The United States and Russia, but its not an insignificant consideration influencing the feasible actions and counter-actions to be taken by the 2 countries' leaderships.