4) Weeks after suspending his campaign, Rick Santorum endorsed Mitt Romney late last night -- quite tepidly, in a statement. After reiterating some of his differences with Romney, Santorum wrote: "It will require all hands on deck if our nominee is to be victorious. Governor Romney will be that nominee and he has my endorsement and support to win this the most critical election of our lifetime." 3) The DSCC's first wave of fall ad buys amounts to $14.1 million in three states where Democrats are trying to hold onto seats they currently control, Virginia, Montana and Missouri. Sens. Claire McCaskill and Jon Tester, both elected in red states in the 2006 Democratic wave, are among the two most vulnerable incumbents this cycle and the DSCC is signaling it will fight for them. 2) Liberal donors with deep pockets are getting ready to give allied outside groups about $100 million to boost Democratic hopes this fall. But they won't be focusing on fighting Republicans on the airwaves. The New York Times: 1) It's election day in Indiana, North Carolina, Wisconsin and West Virginia. The marquee showdown is in the Hoosier State, where Treasurer Richard Mourdock is poised to unseat Sen. Richard Lugar. But also keep an eye on North Carolina, where a ban on same-sex marriage is likely to pass, and Wisconsin, where Democrat Tom Barrett is likely to advance to a rematch against Republican Gov. Scott Walker. Check out Hotline On Call's previews of all of the important races an stay tuned to the blog tonight for full results and analysis after the polls close.