On paper, Jon Ossoff has plenty of reasons to break party ranks as the government shutdown drags into a third week: The 38-year-old Georgian is the most vulnerable Senate Democrat up for re-election next year and his home state has more than 81,000 federal workers at risk for furloughs and firings

In many ways, Janet Mills is the ideal Democratic recruit to take on Republican Sen. Susan Collins, a fifth-term moderate with a track record of beating well-funded challengers. Mills is a two-term governor with a history of outperforming her party and a record of pushing back against President Donald Trump.

The decision sets up one of the biggest primaries of the year as Democrats seek to finally oust GOP Sen. Susan Collins.

U.S. Rep. Wesley Hunt on Monday launched a Republican primary campaign for the U.S. Senate seat held by John Cornyn.

Republican Rep. Wesley Hunt is running for the US Senate in Texas, defying Senate GOP leadership and adding a new element to an already contentious primary campaign.