Aug 3, 2012 at 4:55pm ET by Barry Schwartz Below is what happened in search today, as reported on Search Engine Land and from other places across the web. From Search Engine Land: Google Intros Congressional District Targeting In AdWords Just in time for upcoming elections, Google has released an AdWords feature that lets political candidates (and anyone else, for that matter) target their campaigns by Congressional District. Given how difficult it is to pinpoint audiences within particular districts by ZIP code or municipality — and the fact that district boundaries change every 10 years [...] Crowdsourced SEM: Under The Hood With Trada In the June 2006 Wired magazine article The Rise of…