If you’re wondering how different academic journals in political science fare according to different ranking measures, have a look at the article by Giles and Garand (2007). Below, I reproduce the table on page 744:
Whatever the ranking method used, World Politics, International organisation and the American Political Science Review are in the top 5. The Journals in bold are the ones which are not picked by the ranking of the column to the left, e.g.: “International interactions” appears in column “PS Impact” but it is not in “ISI impact”. If you can’t be bothered to regularly check whether new issues have been published in these Journals, most Journal providers such as SAGE where you can also receive automatic updates through the RSS feed.