Hugh Pickens writes "The LA Times reports that Rick Santorum defended his robocalls urging Democrats in Michigan to vote in today's critical primary, a tactic that has come under withering criticism from rival Mitt Romney as a 'terrible dirty trick' and a 'new low for his campaign.' Santorum says he reached out to Democratic voters, who can vote in the primary, to show that 'we can attract voters we need to win states like Michigan,' and noted that the former Massachusetts governor has wooed Democrats in the past and used Santorum's own words endorsing him in the 2008 race on a robocall of his own. 'I didn't complain about it. I don't complain. You know what, I'm a big guy. I can take it.' Romney crossed party lines himself to vote for Paul Tsongas in the 1992 Democratic primary over Bill Clinton in order to cause mischief for the general election. 'In Massachusetts, if you register as an independent, you can vote in either the Republican or Democratic primary,' said Romney, who until he made an unsuccessful run for Senate in 1994 had spent his adult life as a registered independent."