Former New Hampshire Attorney General Kelly AyotteKelly AyotteOPINION: Democracy will send ISIS to the same grave as communism Kelly Ayotte joins defense contractor's board of directors Week ahead: Comey firing dominates Washington MORE (R) is in Washington today as she cues up a run for the Senate seat being vacated by Sen. Judd Gregg (R-N.H.).

The Hill's Walter Alarkon saw Ayotte walking with Senate Minority Leader Mitch McConnellMitch McConnellOpioid crisis threatens GOP ObamaCare repeal Trump making calls to senators on healthcare bill Trump called Cruz to press him on ObamaCare repeal bill: report MORE (R-Ky.) and National Republican Senatorial Committee (NRSC) Chairman John CornynJohn CornynOpioid crisis threatens GOP ObamaCare repeal Lawmakers want meeting with Trump administration to take US-Mexico border trade Rocky rollout for Senate healthcare bill MORE (R-Texas) this afternoon.

A source said she is "introducing herself to Senators, committee staff and others as part of the exploration process."