We know that you've been angling to run for some time.
What did the "angling "mean in this line ?
is "angle to " a phase ?

Here is the context (house of cards):

We're here to talk about my resume?
"Mayor of DC" would look good on that resume, wouldn't it?
We know that you've been angling to run for some time.
Experience is your strong suit.
Indorsement, fund raising..
they're not.
我们可以帮你We can help with that.
罗素Russo.
37:45.85,0:37:46.82你可以走了You're free to go.

Question

We know that you've been angling to run for some time.
What did the "angling "mean in this line ?
is "angle to " a phase ?

Here is the context (house of cards):

We're here to talk about my resume?
"Mayor of DC" would look good on that resume, wouldn't it?
We know that you've been angling to run for some time.
Experience is your strong suit.
Indorsement, fund raising..
they're not.
我们可以帮你We can help with that.
罗素Russo.
 37:45.85,0:37:46.82你可以走了You're free to go.

Answer

"Angling to" in this phrase means that this man has had intentions of running for mayor of DC.  Angling means that he has been keeping track of the situation and has been scheming and thinking about running for mayor.  It has kind of a secretive connotation, in that he is not announcing to everyone his intentions, but working stealthily to achieve his goals.  This phrase is not used often in everyday spoken English.

Answer

"To angle" means "to fish" in a figurative sense, ie. trying several things (indirectly) in the hope that one of his actions will find a good result. The "to" is connected to "run". The part "to run" is called an infinitive of purpose, and tells us the intention behind the action.