Barbara Boxer spoke on the Senate floor this week about foreign oil. She wore a purple blazer:
A one button blazer a a bright, saturated color like this can veer in the direction of the cliche of the woman politician in the "colored suit." But this blazer works quite well - it is a flattering color for her, it is perfectly fitted, and it is paired with simple jewelry and a plain white shirt.
The key to wearing this much color is frequently to make that single garment the showcase and let the rest of the look recede.