Remember the Battle of Blair Mountain and all the other struggles workers went through in this country when you go to the ballot box.
The Battle of Blair Mountain was one of the biggest civil uprisings in the United States history and the largest armed insurrection since the American Civil War. For five days in late August and early September 1921, in Logan County, West Virginia, between 10,000 and 15,000 coal miners confronted an army of police and strikebreakers backed by coal operators during a struggle by the miners to unionize the southwestern West Virginia coalfields. Their struggle ended only after approximately one million rounds were fired, and the United States Army intervened by presidential order.
People fought and died for American Workers to have rights like 8 hour days, weekends, minimum wages, and unions. The least any of us can do, but especially union members, is to remember those people who fought for our rights against powerful corporations, and to vote for the people most likely to make sure we retain those rights.
Of course, there are a lot of other reasons to vote for Democrats, not the least of which is that we tend to have at least a basic understanding and respect for science. But most of all, just look at what George Bush did. Seriously. The Republicans had their chance, they ran things the way they wanted, and it was a disaster of epic proportions. GW Bush is the modern Hoover, and here we are in a Great Recession started by GOP ideology. It doesn't work. Tax cuts for the rich don't create jobs (in fact, George Bush had the worst job creation record since Hoover). Deregulation and privatization create corruption and legalized theft. Pollution increases health care costs.
Democrats, for all their faults, did not cause our current troubles. Republicans did.