Political party strength in Maine

The following table indicates the party of elected officials in the U.S. state of Maine:

The table also indicates the historical party composition in the:

For years in which a presidential election was held, the table indicates which party's nominees received the state's electoral votes.

The parties are as follows:   Democratic (D),   Democratic-Republican (DR),   Federalist (F),   Greenback (GB),   Independent (I),   National Republican (NR),   National Union (NU),   Opposition (O),   Republican (R), and   Whig (W).