Russians voted in a presidential election Sunday that was expected to give Vladimir Putin an easy victory, but his opponents alleged officials were compelling people to come to the polls so that a low turnout does not tarnish the win.

Opinion polls give Putin, the incumbent, support of around 70 percent, or nearly 10 times the backing of his nearest challenger.

Another term will take him to nearly a quarter century in power — a longevity among Kremlin leaders second only to Soviet dictator Josef Stalin.