Changing of the Guard

We elect our politicians according to our beliefs and political affiliations. Occasionally, we vote across party lines to elect politicians when we feel the politicians will benefit our cause beyond expectations of our party affiliate candidate. If politicians are voted in by the citizens according to the desired statements above, should not politicians be forced to resign if the politicians decide they want to change their affiliation? For example, if a politician is elected as a democrat and decides to change party affiliation, the politician should resign and allow the people to select a candidate they can trust to fulfill the desires for which that politician was elected. Democrats and Republicans vote across party lines on a regular basis; what is the purpose of changing party affiliations unless you joined the party simply to become an elected official. If I went to work and told my boss that I was changing my job description to suit my needs, I would be out of a job within two weeks. Two weeks if the contract requires two week notice, the end of the day if it doesn’t. Why should politicians be any different? If a Republican decides to become a Democrat, the politician should do it at the end of his elected term and run for office as a Democrat, or vice versa. I, for one, am sick of watching politician flip flop between parties.