DES MOINES — Iowa Democrats should consider altering their presidential caucus procedures to look more like the vote conducted by Republicans, a longtime party insider said Friday.The close and contested results of Monday’s Democratic caucuses should cause some soul-searching within the party, said Brad Anderson, a political consultant who directed President Barack Obama’s 2012 re-election campaign in Iowa and who has worked on multiple Democratic campaigns here.Anderson, who also suggested a commission be formed to examine the Democratic caucuses, made the comments Friday during taping of Iowa Public Television’s “Iowa Press,” which will air this weekend.“I think it is fair to say, ‘OK, some of these things need to change moving forward,’ ” Anderson said, according to an IPTV transcript.