So the basic message of the ad is 'try to get your gf to join the SPÖ and you'll find an empty bed'. The meta-message is that all the sexy girls are at the ÖVP, and SPÖ voters are untrustworthy looooosers.
(The SPÖ went on to win the elections, mainly because the ÖVP vote stayed at home)
In Europe, at least...