This is not because polling no longer works - it's because voter opinion is highly unstable.

Besides conflicting bottom lines, the surveys also provide an array of contradictory conclusions about voter opinions.

Some of the city's newspapers, whose reports drive television coverage and affect voter opinion, are also run by news barons.

The battle for voter opinion in Washington was fierce.

There has been much talk in political circles in recent years about the rapid shift in voter opinion that often takes place days before an election.

The health of the economy will undoubtedly shape voter opinion and behavior.

His morals seem to be completely based on voter opinions.

Everyone in the politics business recognizes that elections are an imperfect method of assessing true voter opinion.

However, the design of many voting systems prevents full expression of voter opinion.

One night's debate is not going to change voter opinions on the key issues.