A couple data points to go along with the weighted unemployment numbers Ramesh posted below:
National unemployment rose from 8.2 percent in June to 8.3 percent in July.
Republican-governed states: 29
Total Workforce: 85,155,870
Total Unemployed: 6,680,458
Highest Unemployment Rate: Nevada, 12 percent
Lowest Unemployment Rate: North Dakota, 3 percent
Average Unemployment (not weighted): 7.3 percent
Democrat-governed states: 20
Total Workforce: 68,792,497
Total Unemployment: 6,032,532
Highest Unemployment: California with 10.7 percent
Lowest Unemployment: Vermont with 5 percent
Average Unemployment (not weighted): 7.6 percent
Democrats mostly have California to thank for their skewed weighted-unemployment rate — nearly a third of Democrat-governed unemployment comes from California, where 1.9 million people, of a workforce of over 18 million, are without a job. Like Ramesh said, take from that what you will.
Rhode Island, governed by the only governor independent of either party, has an unemployment rate of 10.8 percent.