Allegiant
The Century Dictionary and Cyclopedia
Loyal.
noun.
One who owes or renders allegiance; a native.
the GNU version of the Collaborative International Dictionary of English
adjective.
Loyal.
Wiktionary, Creative Commons Attribution/Share-Alike License
adjective.
Steadfastly
loyal
, especially to a monarch or government.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
steadfast in devotion (especially to your lawful monarch or government)
Word Usage
"Should they remain allegiant to their party and vote for Scott McAdams, the Democratic candidate?"