Yes and I believe this one of the most problematic aspects of representative democracies. Policies are often complex so hardly anyone has the time to educate themselves on all policies of a party, instead many revert to the other extreme and simply cheer for their team.
An interesting concept to alleviate this problem has been pioneered in Melbourne local politics is citizen councils.
My Google skills are failing me here — can you provide a link, and/or some more search terms, regarding these citizen councils? Is it specific to Melbourne municipal council or other Victorian LGA’s?