WJZ CBS Morning News May 18, 2010
collection of races so far this year. and will no doubt put a number of political theories to the test. senator arlen specter hopes to still be cheering by the end of the day. he's locked in one of today's biggest political battles, pennsylvania's democratic primary. after 30 years as a republican, it's his first race as a democrat. he switched alliances just last year, but believes he's urged the backing of his new party. >> when i provided the 60th vote for comprehensive health insurance, i think that's pulled a lot of democrats my way. >> reporter: but his current rival, joe sesta...