There are seven colors in the rainbow, seven wonders of the world, seven harmonies in music, and seven days in a week. The Springfield regional Chamber is going for its seventh win in The Republican and MassLive Reader Raves poll, and we need your vote to make this year Lucky 7. Here’s all you have to do – click here, fill in your contact information, scroll down to the Best Chamber and write us in. Easy. Voting ends Sunday, August 4, at 11:59 p.m.