A local TV station conducted a "Pulse-Poll" about the
upcoming mayoral election. Evening news viewers were invited to
text in their votes, with the results being announced on
the late-night news. Based on the texts, the station
predicted that the current mayor would win the election
with 52% of the vote. They were wrong and the
mayor lost, getting only 46% of the vote. Do you think
the station's faulty prediction is more likely to be a result
of bias or sampling error? Explain.