Need help, car doesn't always start, and gauge light flickers a little too Options

[wuhukf]

I'm not too sure what's wrong with the car, but sometimes it doesn't start up right away. This usually only happens when it's cold or if I haven't driven it for some time. What happens is that it just clicks when I turn the key, but if I do it a second time, it usually starts up. Also, after it starts up, the light flickers on my gauge a little. Most of the flickering light is coming from the part that shows the gas and temperature, but after I drive the car for a little it doesn't flicker anymore. I think maybe the starter or ignition is bad, but not sure. Anyone know what's wrong?