I very rarely use the term "Tea Party". I just did some searches (trying to figure out what you mean) on " Tea Party Oaths ".
Apparently there was a 'mock oath taking', involving Ted Cruz. (Didn't read it, may be a video on it).
And according to the searches " The Oath Keepers" are being viewed as military branch of the "Tea party". (Seems comical, to me).
The ' Oath Keepers' are as most know, military & police people , who have already sworn to uphold the Constitution against all enemies, foreign & domestic.
It appears from the titles of all the articles, there is a lot of fear based negativity of the "Tea Party & "The Oath Keepers" (2 separate groups, but I didn't check out either).
However: it does stand to reason, if anyone other than the military & police (who must take the oath), takes the oath, then they may consider upholding the Constitution as their duty.
So....perhaps some politicians have. In a serious or mock fashion, taken the oath. I have no idea. I didn't look into it further
Hope this helps a little.
Not sure what it means really or if it is that important. When I look at how the Republican Base argues something is going on. Since 2010 and on Republicans who most I believe who have taken this oath ( and I do not see why it is needed) have become a party of fighting and mud slinging. No respect for anyone not even their own. Makes me wonder whats really going on.