4) Meanwhile, Sen. Scott Brown's continuous courting of the middle in the Bay State continues this today when he delivers a speech on bipartisanship. 3) There has been a lot of uncertainty about whether Ted Cruz can afford to go up on broadcast TV in Texas as his opponents have been doing. But the urgency of the fast-approaching May 29 primary is registering with the Cruz camp, as the Dallas Morning News reports that he has dropped $500,000 into a broadcast buy. 2) There is a growing sense in the Indiana Senate race that Sen. Richard Lugar's attacks against state Treasurer Richard Mourdock arrived too late in the campaign. There's certainly something to that idea. Another way of looking at it: The negativity is overshadowing an opportunity to remind voters why they have supported Lugar so many times in the first place. The Indianapolis Star's Matthew Tully: "My take: People needed to be reminded why they liked Lugar so much, why they've elected him so many times, and why he is a unique and crucial figure in the nation's capital. That message, though, has been overshadowed by the negativity -- and negativity simply isn't Lugar's strength." Meanwhile, Grover Norquist is set to endorse Mourdock. 1) The pro-Romney super PAC Restore Our Future is going back on the air, spending $4 million on an eight-state TV buy. Meanwhile, Richard Grenell, who was tapped to be spokesman on foreign policy issues has resigned from Romney's campaign. And Romney is visiting Virginia this week but former Sen. George Allen won't be joining him at any events.