She didn't endorse Cruz until mid-May, and by that time, she was not decisive in getting him into the run-off (an April poll already showed Cruz in a position to make the run-off). And by the time she came to TX during the run-off, the polls showed Cruz with a big lead. Cruz, his campaign, and their volunteers were the kingmakers, not Palin. I won't speak to Fischer, because I don't know anything about her race, but I'd be interested to see any actual numbers which showed the endorsement as moving votes in such a way to make Palin a kingmaker.
I don't think endorsements matter much in an election, whether that endorsement is Palin's, Rick Perry's, etc., et al. What matters is getting votes. If you or anyone else has any thing that shows these endorsements move votes in such a way that they have more impact than direct voter contact by the candidate or their campaign, then please share it. Otherwise, I'll stick with the understanding that while endorsements generate earned media, the endorsers are not kingmakers.
Yeah, and she was a poor pick for VP in 2008, right?