In the context of Jewish History, it is often said that New Hampshire was the last state to remove legal disabilities on Jews in 1877 (which technically pushes the US quite far down the timeline for Jewish emancipation in spite of the tolerance in the federal constitution), because it had a state ban on non-Protestant officeholders (and the Religious Test part of the constitution was not yet incorporated to the states as I understand it).
However, while I know that this law was changed in 1877, was it actually enforced? Are there records of (analagous to the first Jewish MPs forbidden to take their seats in the UK) state representatives elected but not allowed to serve because they refused to take a Protestant Oath? Or was the law just a dead letter (like the provisions in the Texas constitution barring atheists from office)?