How can Opinion Polls be seen as Influential

-1992: Many Polls showed Labour to win the General Election, which may have swayed Undecided Voters to back the Conservatives to not all Neil Kinnock in Power -2015 Closeness of Polls made the Conservatives warn of a SNP-Labour Coalition, leading to a Small Conservative Majority -Polls showing Immigration was an Important issue after 2010 made Conservatives focus more on Limiting Immigration