Muscatine

While driving home from work I saw some more Lofgren signs and as well some Dabeet signs in peoples front yards.  Will some of you please answer this question?   What is the purpose of these political signs?  What do the politicians hope to gain from the signs?

Mostly name recognition.   There's also a slim edge if you win the sign war.   It increases if you win decisively.
It gives an indication that someone is in favor of you.   Both the property owners and the many people who put up the signs

Blah, blah, blah, blah.....ad infinitum

Republican, ignore the "blah, blah, blah.......".   The guy obviously knows nothing about the subject.