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in lockstep (with someone or something)

Moving or acting simultaneously with, in conjunction with, or in the same manner as someone or something. Primarily heard in US. For the past two years, the senator and immigration reform activists have been in lockstep. The data clearly shows that rates of unemployment and depression rise in lockstep.
See also: lockstep, someone
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

in lockstep

If two people or things move in lockstep, they are very closely linked and dependent on one another, so that if one changes, the other changes too. Levels of carbon dioxide and methane in the air fell in lockstep with decreases in summer sunshine. Note: Lockstep is a way of marching in which the marchers follow as close behind each other as possible.
See also: lockstep
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012
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References in periodicals archive ?
Should indeed there ever comes a day when the Northern Ireland Assembly at Stormont, just south of Belfast, ever gets up and running again, it will have to decide whether Northern Ireland will stay in lockstep with the rest of the UK in changing its clocks, or will opt to keep pace with the Republic of Ireland, which would very likely follow the Europeans in scrapping the changing clock.
He tweeted that it was "remarkable that income tax devolution without lockstep is happening.
Stephen Crabb told MPs that throughout the passage of the Wales Bill he had been prepared to "listen to all the arguments and perspectives and if necessary take a different approach on the lockstep".
"I am committed to removing obstacles to them, which is why tomorrow I will be asking my colleagues [to agree] to amend the Wales Bill to remove the lockstep restriction."
The truth is that the High Court is one vote away from a lockstep liberal majority that is dangerous to American self-defense.
"NEC's delivery of lockstep functionality leveraging the Intel Xeon processor E5 family is a true testimony to NEC's 10 year history of bringing such technology innovation to market," said Brian Garrett, Vice President, ESG Lab.
The range includes 300-MHz triple-core devices with 8 MB of embedded Flash (eFlash), 200-MHz triple-core devices with 4-MB eFlash, 200-MHz dual-core devices with 2.5-MB eFlash, and 130-MHz and 80-MHz single-core and single-core lockstep devices with 1.5-MB, 1-MB and 0.5-MB of eFlash.
and Israel, "We are going to make sure that we work in lockstep as we proceed to try to solve this, hopefully diplomatically." In fact, they haven't been in lockstep.
Obama also said, "We are going to be sure we work in lockstep as we proceed to try to solve this -- hopefully diplomatically." DEBKAfile analysts report that by "lockstep" he meant the role to which he had assigned Israel in the massive disinformation contest underway between the West and Iran.
"Carriers can raise rates in lockstep now without any concern that such behavior represents a violation of antitrust laws," he added.
The lockstep associate pay scale was cracked at several top firms.
Coulter facetiously and snidely refers to Michelle Obama as a "saint" and "Mother Teresa" and suggests that her public service career "advanced in lockstep with the political advancement of her husband."
Close study reveals a remarkable common personality trait--all seventeen are outsiders, whose advantage comes from marching to their own drummer outside of the lockstep synchronicity of everyone else.
But each index is produced according to different underlying concepts and often do not move in lockstep. A recent analysis by Clinton P.