USA | Elections | Senate

With Colorado one of several toss-up races, most analysts agree that if Democrats have any hope of holding on to their Senate majority, it will be due to success on the ground, getting voters – especially minorities, young voters, and low-income voters – to the polls.

Tossup races tend to tilt in one direction on Election Day, an expert notes. There are 10 Senate tossup races Tuesday, and late polling is trending toward Republicans.

Agriculture is Kansas’s bread-and-butter issue, literally. But Sen. Pat Roberts (R) – potential chair of the Agriculture Committee – is barely talking about it.

New Hampshire's Senate candidates, Republican Scott Brown and incumbent Democrat Jeanne Shaheen, have defined each other clearly.

To fend off his Republican challenger, Democratic Alaska Sen. Mark Begich is depending on rural voters and rural issues.

Arkansas was the last blue bastion in the South. Democratic Sen. Mark Pryor's campaign rests on getting voters to think locally instead of nationally.

As House speaker, Thom Tillis masterminded the conservative revolution in North Carolina. Will voters now decide the tea party agenda is steeped too strong? Democratic Sen. Kay Hagan hopes so.

Democratic Rep. Bruce Braley seemed a shoo-in for the open Senate seat in Iowa. Then along came Joni Ernst. Now Iowans have a tough choice.

Kentuckians aren't overly pleased with incumbent Republican Sen. Mitch McConnell. But they like President Obama even less, which makes things hard for Democrat Alison Lundergan Grimes.

Democratic Sen. Mark Udall has dumped much of his campaign money into attacking Republican Rep. Cory Gardner on reproductive rights. But it might not have worked as well as he hoped.