But see here:
"In contrast to the "pure issue message" scenario set forth in the 1995 ABA Comments, an IRC 501(c)(3) organization may avail itself of the opportunity to intervene in a political campaign in a rather surreptitious manner. The concern is that an IRC 501(c)(3) organization may support or oppose a particular candidate in a political campaign without specifically naming the candidate by using code words to substitute for the candidate's name in its messages, such as "conservative," "liberal," "pro-life," "pro-choice," "anti-choice," "Republican," "Democrat," etc., coupled with a discussion of the candidacy or the election. When this occurs, it is quite evident what is happening -- an intervention is taking place...
Basically, a finding of campaign intervention in an issue advertisement requires more than just a positive or negative correspondence between an organization's position and a candidate's position. What is required is that there must be some reasonably overt indication in the communication to the reader, viewer, or listener that the organization supports or opposes a particular candidate (or slate of candidates) in an election; rather than being a message restricted to an issue."
Does advertising "vote pro-life" indicate to the reader that the church supports or opposes a slate of candidates?
There is a distinction between taking a position on a public policy issue, such as taking the position that abortion is wrong, and telling people to vote for a slate of candidates that take the same position on that public policy issue.
The phrase “vote pro-life” certainly does express support for “pro-life” candidates and opposition toward pro-choice candidates, and encourages the reader to vote for those “pro-life” candidates over the pro-choice candidates.
I do agree that these types of messages have been going on for a long time and that there won’t be any effort to do anything about it.