Lieberman won the battle for low-information voters, as predicted.

One-quarter of the voters on Tuesday said they made up their minds whom to vote for in the week before the primary; Mr. Lieberman received a majority of their votes. Thirty percent decided in the last month, and three-fifths of them preferred Mr. Lamont. Voters who made up their mind earlier than that divided closely — 51 percent for Mr. Lieberman and 49 percent for Mr. Lamont.

Not surprising.