Realignment occurs when a reasonably stable pattern of party support based on a particular set of important issues is replaced by a new pattern of party support based on a new set of issues.

That statement is true.

In our political environment, we will notice that a political part will have the tendency to support certain sets of principle.

In democratic part for example, has the tendency to put more government involvement in economy while Republican party, on the other hand, has the tendency to put less government involvement