Political Parties

A party’s “”platform”” is its official statement of beliefs and values. Most members of a political party – including its elected officials – have never read their party’s platform. A widely-held view among campaign professionals and political consultants is that a party’s platform can never help its candidates, but can hurt them if it contains provisions that are considered controversial by swing voters.
Your professor’s view is that party platforms are generally written by the most conservative Republicans and the most liberal Democrats – since those are the only party members devoted enough to hang around party conventions long enough to argue and vote on the platform provisions.
Do party platforms really mean anything? Is there really any difference?